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Diffstat (limited to '')
| -rw-r--r-- | wsutil/filesystem.c | 2722 |
1 files changed, 2722 insertions, 0 deletions
diff --git a/wsutil/filesystem.c b/wsutil/filesystem.c new file mode 100644 index 0000000..065cdd3 --- /dev/null +++ b/wsutil/filesystem.c @@ -0,0 +1,2722 @@ +/* filesystem.c + * Filesystem utility routines + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" +#include "filesystem.h" + +#define WS_LOG_DOMAIN LOG_DOMAIN_WSUTIL + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + +#ifdef _WIN32 +#include <windows.h> +#include <tchar.h> +#include <shlobj.h> +#include <wsutil/unicode-utils.h> +#else /* _WIN32 */ +#ifdef ENABLE_APPLICATION_BUNDLE +#include <mach-o/dyld.h> +#endif +#ifdef __linux__ +#include <sys/utsname.h> +#endif +#ifdef __FreeBSD__ +#include <sys/types.h> +#include <sys/sysctl.h> +#endif +#ifdef HAVE_DLGET +#include <dlfcn.h> +#endif +#include <pwd.h> +#endif /* _WIN32 */ + +#include <wsutil/report_message.h> +#include <wsutil/privileges.h> +#include <wsutil/file_util.h> +#include <wsutil/utf8_entities.h> + +#include <wiretap/wtap.h> /* for WTAP_ERR_SHORT_WRITE */ + +#include "path_config.h" + +#define PROFILES_DIR "profiles" +#define PLUGINS_DIR_NAME "plugins" +#define EXTCAP_DIR_NAME "extcap" +#define PROFILES_INFO_NAME "profile_files.txt" + +#define _S G_DIR_SEPARATOR_S + +/* + * Application configuration namespace. Used to construct configuration + * paths and environment variables. + * XXX We might want to use the term "application flavor" instead, with + * "packet" and "log" flavors. + */ +enum configuration_namespace_e { + CONFIGURATION_NAMESPACE_UNINITIALIZED, + CONFIGURATION_NAMESPACE_WIRESHARK, + CONFIGURATION_NAMESPACE_LOGRAY +}; +enum configuration_namespace_e configuration_namespace = CONFIGURATION_NAMESPACE_UNINITIALIZED; + +#define CONFIGURATION_NAMESPACE_PROPER (configuration_namespace == CONFIGURATION_NAMESPACE_WIRESHARK ? "Wireshark" : "Logray") +#define CONFIGURATION_NAMESPACE_LOWER (configuration_namespace == CONFIGURATION_NAMESPACE_WIRESHARK ? "wireshark" : "logray") +#define CONFIGURATION_ENVIRONMENT_VARIABLE(suffix) (configuration_namespace == CONFIGURATION_NAMESPACE_WIRESHARK ? "WIRESHARK_" suffix : "LOGRAY_" suffix) + +char *persconffile_dir = NULL; +char *datafile_dir = NULL; +char *persdatafile_dir = NULL; +char *persconfprofile = NULL; +char *doc_dir = NULL; + +/* Directory from which the executable came. */ +static char *progfile_dir = NULL; +static char *install_prefix = NULL; + +static bool do_store_persconffiles = false; +static GHashTable *profile_files = NULL; + +/* + * Given a pathname, return a pointer to the last pathname separator + * character in the pathname, or NULL if the pathname contains no + * separators. + */ +char * +find_last_pathname_separator(const char *path) +{ + char *separator; + +#ifdef _WIN32 + char c; + + /* + * We have to scan for '\' or '/'. + * Get to the end of the string. + */ + separator = strchr(path, '\0'); /* points to ending '\0' */ + while (separator > path) { + c = *--separator; + if (c == '\\' || c == '/') + return separator; /* found it */ + } + + /* + * OK, we didn't find any, so no directories - but there might + * be a drive letter.... + */ + return strchr(path, ':'); +#else + separator = strrchr(path, '/'); + return separator; +#endif +} + +/* + * Given a pathname, return the last component. + */ +const char * +get_basename(const char *path) +{ + const char *filename; + + ws_assert(path != NULL); + filename = find_last_pathname_separator(path); + if (filename == NULL) { + /* + * There're no directories, drive letters, etc. in the + * name; the pathname *is* the file name. + */ + filename = path; + } else { + /* + * Skip past the pathname or drive letter separator. + */ + filename++; + } + return filename; +} + +/* + * Given a pathname, return a string containing everything but the + * last component. NOTE: this overwrites the pathname handed into + * it.... + */ +char * +get_dirname(char *path) +{ + char *separator; + + ws_assert(path != NULL); + separator = find_last_pathname_separator(path); + if (separator == NULL) { + /* + * There're no directories, drive letters, etc. in the + * name; there is no directory path to return. + */ + return NULL; + } + + /* + * Get rid of the last pathname separator and the final file + * name following it. + */ + *separator = '\0'; + + /* + * "path" now contains the pathname of the directory containing + * the file/directory to which it referred. + */ + return path; +} + +/* + * Given a pathname, return: + * + * the errno, if an attempt to "stat()" the file fails; + * + * EISDIR, if the attempt succeeded and the file turned out + * to be a directory; + * + * 0, if the attempt succeeded and the file turned out not + * to be a directory. + */ + +int +test_for_directory(const char *path) +{ + ws_statb64 statb; + + if (ws_stat64(path, &statb) < 0) + return errno; + + if (S_ISDIR(statb.st_mode)) + return EISDIR; + else + return 0; +} + +int +test_for_fifo(const char *path) +{ + ws_statb64 statb; + + if (ws_stat64(path, &statb) < 0) + return errno; + + if (S_ISFIFO(statb.st_mode)) + return ESPIPE; + else + return 0; +} + +#ifdef ENABLE_APPLICATION_BUNDLE +/* + * Directory of the application bundle in which we're contained, + * if we're contained in an application bundle. Otherwise, NULL. + * + * Note: Table 2-5 "Subdirectories of the Contents directory" of + * + * https://developer.apple.com/library/mac/documentation/CoreFoundation/Conceptual/CFBundles/BundleTypes/BundleTypes.html#//apple_ref/doc/uid/10000123i-CH101-SW1 + * + * says that the "Frameworks" directory + * + * Contains any private shared libraries and frameworks used by the + * executable. The frameworks in this directory are revision-locked + * to the application and cannot be superseded by any other, even + * newer, versions that may be available to the operating system. In + * other words, the frameworks included in this directory take precedence + * over any other similarly named frameworks found in other parts of + * the operating system. For information on how to add private + * frameworks to your application bundle, see Framework Programming Guide. + * + * so if we were to ship with any frameworks (e.g. Qt) we should + * perhaps put them in a Frameworks directory rather than under + * Resources. + * + * It also says that the "PlugIns" directory + * + * Contains loadable bundles that extend the basic features of your + * application. You use this directory to include code modules that + * must be loaded into your applicationbs process space in order to + * be used. You would not use this directory to store standalone + * executables. + * + * Our plugins are just raw .so/.dylib files; I don't know whether by + * "bundles" they mean application bundles (i.e., directory hierarchies) + * or just "bundles" in the Mach-O sense (which are an image type that + * can be loaded with dlopen() but not linked as libraries; our plugins + * are, I think, built as dylibs and can be loaded either way). + * + * And it says that the "SharedSupport" directory + * + * Contains additional non-critical resources that do not impact the + * ability of the application to run. You might use this directory to + * include things like document templates, clip art, and tutorials + * that your application expects to be present but that do not affect + * the ability of your application to run. + * + * I don't think I'd put the files that currently go under Resources/share + * into that category; they're not, for example, sample Lua scripts that + * don't actually get run by Wireshark, they're configuration/data files + * for Wireshark whose absence might not prevent Wireshark from running + * but that would affect how it behaves when run. + */ +static char *appbundle_dir; +#endif + +/* + * true if we're running from the build directory and we aren't running + * with special privileges. + */ +static bool running_in_build_directory_flag = false; + +/* + * Set our configuration namespace. This will be used for top-level + * configuration directory names and environment variable prefixes. + */ +static void +set_configuration_namespace(const char *namespace_name) +{ + + if (configuration_namespace != CONFIGURATION_NAMESPACE_UNINITIALIZED) { + return; + } + + if (!namespace_name || g_ascii_strcasecmp(namespace_name, "wireshark") == 0) + { + configuration_namespace = CONFIGURATION_NAMESPACE_WIRESHARK; + } + else if (g_ascii_strcasecmp(namespace_name, "logray") == 0) + { + configuration_namespace = CONFIGURATION_NAMESPACE_LOGRAY; + } + else + { + ws_error("Unknown configuration namespace %s", namespace_name); + } + + ws_debug("Using configuration namespace %s.", CONFIGURATION_NAMESPACE_PROPER); +} + +const char * +get_configuration_namespace(void) +{ + return CONFIGURATION_NAMESPACE_PROPER; +} + +bool is_packet_configuration_namespace(void) +{ + return configuration_namespace != CONFIGURATION_NAMESPACE_LOGRAY; +} + +#ifndef _WIN32 +/* + * Get the pathname of the executable using various platform- + * dependent mechanisms for various UN*Xes. + * + * These calls all should return something independent of the argv[0] + * passed to the program, so it shouldn't be fooled by an argv[0] + * that doesn't match the executable path. + * + * We don't use dladdr() because: + * + * not all UN*Xes necessarily have dladdr(); + * + * those that do have it don't necessarily have dladdr(main) + * return information about the executable image; + * + * those that do have a dladdr() where dladdr(main) returns + * information about the executable image don't necessarily + * have a mechanism by which the executable image can get + * its own path from the kernel (either by a call or by it + * being handed to it along with argv[] and the environment), + * so they just fall back on getting it from argv[0], which we + * already have code to do; + * + * those that do have such a mechanism don't necessarily use + * it in dladdr(), and, instead, just fall back on getting it + * from argv[0]; + * + * so the only places where it's worth bothering to use dladdr() + * are platforms where dladdr(main) return information about the + * executable image by getting it from the kernel rather than + * by looking at argv[0], and where we can't get at that information + * ourselves, and we haven't seen any indication that there are any + * such platforms. + * + * In particular, some dynamic linkers supply a dladdr() such that + * dladdr(main) just returns something derived from argv[0], so + * just using dladdr(main) is the wrong thing to do if there's + * another mechanism that can get you a more reliable version of + * the executable path. + * + * So, on platforms where we know of a mechanism to get that path + * (where getting that path doesn't involve argv[0], which is not + * guaranteed to reflect the path to the binary), this routine + * attempsts to use that platform's mechanism. On other platforms, + * it just returns NULL. + * + * This is not guaranteed to return an absolute path; if it doesn't, + * our caller must prepend the current directory if it's a path. + * + * This is not guaranteed to return the "real path"; it might return + * something with symbolic links in the path. Our caller must + * use realpath() if they want the real thing, but that's also true of + * something obtained by looking at argv[0]. + */ +#define xx_free free /* hack so checkAPIs doesn't complain */ +static const char * +get_current_executable_path(void) +{ +#if defined(ENABLE_APPLICATION_BUNDLE) + static char *executable_path; + uint32_t path_buf_size; + + if (executable_path) { + return executable_path; + } + + path_buf_size = PATH_MAX; + executable_path = (char *)g_malloc(path_buf_size); + if (_NSGetExecutablePath(executable_path, &path_buf_size) == -1) { + executable_path = (char *)g_realloc(executable_path, path_buf_size); + if (_NSGetExecutablePath(executable_path, &path_buf_size) == -1) + return NULL; + } + /* + * Resolve our path so that it's possible to symlink the executables + * in our application bundle. + */ + char *rp_execpath = realpath(executable_path, NULL); + if (rp_execpath) { + g_free(executable_path); + executable_path = g_strdup(rp_execpath); + xx_free(rp_execpath); + } + return executable_path; +#elif defined(__linux__) + /* + * In older versions of GNU libc's dynamic linker, as used on Linux, + * dladdr(main) supplies a path based on argv[0], so we use + * /proc/self/exe instead; there are Linux distributions with + * kernels that support /proc/self/exe and those older versions + * of the dynamic linker, and this will get a better answer on + * those versions. + * + * It only works on Linux 2.2 or later, so we just give up on + * earlier versions. + * + * XXX - are there OS versions that support "exe" but not "self"? + */ + struct utsname name; + static char executable_path[PATH_MAX + 1]; + ssize_t r; + + if (uname(&name) == -1) + return NULL; + if (strncmp(name.release, "1.", 2) == 0) + return NULL; /* Linux 1.x */ + if (strcmp(name.release, "2.0") == 0 || + strncmp(name.release, "2.0.", 4) == 0 || + strcmp(name.release, "2.1") == 0 || + strncmp(name.release, "2.1.", 4) == 0) + return NULL; /* Linux 2.0.x or 2.1.x */ + if ((r = readlink("/proc/self/exe", executable_path, PATH_MAX)) == -1) + return NULL; + executable_path[r] = '\0'; + return executable_path; +#elif defined(__FreeBSD__) && defined(KERN_PROC_PATHNAME) + /* + * In older versions of FreeBSD's dynamic linker, dladdr(main) + * supplies a path based on argv[0], so we use the KERN_PROC_PATHNAME + * sysctl instead; there are, I think, versions of FreeBSD + * that support the sysctl that have and those older versions + * of the dynamic linker, and this will get a better answer on + * those versions. + */ + int mib[4]; + char *executable_path; + size_t path_buf_size; + + mib[0] = CTL_KERN; + mib[1] = KERN_PROC; + mib[2] = KERN_PROC_PATHNAME; + mib[3] = -1; + path_buf_size = PATH_MAX; + executable_path = (char *)g_malloc(path_buf_size); + if (sysctl(mib, 4, executable_path, &path_buf_size, NULL, 0) == -1) { + if (errno != ENOMEM) + return NULL; + executable_path = (char *)g_realloc(executable_path, path_buf_size); + if (sysctl(mib, 4, executable_path, &path_buf_size, NULL, 0) == -1) + return NULL; + } + return executable_path; +#elif defined(__NetBSD__) + /* + * In all versions of NetBSD's dynamic linker as of 2013-08-12, + * dladdr(main) supplies a path based on argv[0], so we use + * /proc/curproc/exe instead. + * + * XXX - are there OS versions that support "exe" but not "curproc" + * or "self"? Are there any that support "self" but not "curproc"? + */ + static char executable_path[PATH_MAX + 1]; + ssize_t r; + + if ((r = readlink("/proc/curproc/exe", executable_path, PATH_MAX)) == -1) + return NULL; + executable_path[r] = '\0'; + return executable_path; +#elif defined(__DragonFly__) + /* + * In older versions of DragonFly BSD's dynamic linker, dladdr(main) + * supplies a path based on argv[0], so we use /proc/curproc/file + * instead; it appears to be supported by all versions of DragonFly + * BSD. + */ + static char executable_path[PATH_MAX + 1]; + ssize_t r; + + if ((r = readlink("/proc/curproc/file", executable_path, PATH_MAX)) == -1) + return NULL; + executable_path[r] = '\0'; + return executable_path; +#elif defined(HAVE_GETEXECNAME) + /* + * Solaris, with getexecname(). + * It appears that getexecname() dates back to at least Solaris 8, + * but /proc/{pid}/path is first documented in the Solaris 10 documentation, + * so we use getexecname() if available, rather than /proc/self/path/a.out + * (which isn't documented, but appears to be a symlink to the + * executable image file). + */ + return getexecname(); +#elif defined(HAVE_DLGET) + /* + * HP-UX 11, with dlget(); use dlget() and dlgetname(). + * See + * + * https://web.archive.org/web/20081025174755/http://h21007.www2.hp.com/portal/site/dspp/menuitem.863c3e4cbcdc3f3515b49c108973a801?ciid=88086d6e1de021106d6e1de02110275d6e10RCRD#two + */ + struct load_module_desc desc; + + if (dlget(-2, &desc, sizeof(desc)) != NULL) + return dlgetname(&desc, sizeof(desc), NULL, NULL, NULL); + else + return NULL; +#else + /* Fill in your favorite UN*X's code here, if there is something */ + return NULL; +#endif +} +#endif /* _WIN32 */ + +static void trim_progfile_dir(void) +{ + char *progfile_last_dir = find_last_pathname_separator(progfile_dir); + + if (! (progfile_last_dir && strncmp(progfile_last_dir + 1, "extcap", sizeof("extcap")) == 0)) { + return; + } + + *progfile_last_dir = '\0'; + char *extcap_progfile_dir = progfile_dir; + progfile_dir = g_strdup(extcap_progfile_dir); + g_free(extcap_progfile_dir); +} + +#if !defined(_WIN32) || defined(HAVE_MSYSTEM) +static char * +trim_last_dir_from_path(const char *_path) +{ + char *path = ws_strdup(_path); + char *last_dir = find_last_pathname_separator(path); + if (last_dir) { + *last_dir = '\0'; + } + return path; +} +#endif + +/* + * Construct the path name of a non-extcap Wireshark executable file, + * given the program name. The executable name doesn't include ".exe"; + * append it on Windows, so that callers don't have to worry about that. + * + * This presumes that all non-extcap executables are in the same directory. + * + * The returned file name was g_malloc()'d so it must be g_free()d when the + * caller is done with it. + */ +char * +get_executable_path(const char *program_name) +{ + /* + * Fail if we don't know what directory contains the executables. + */ + if (progfile_dir == NULL) + return NULL; + +#ifdef _WIN32 + return ws_strdup_printf("%s\\%s.exe", progfile_dir, program_name); +#else + return ws_strdup_printf("%s/%s", progfile_dir, program_name); +#endif +} + +/* + * Get the pathname of the directory from which the executable came, + * and save it for future use. Returns NULL on success, and a + * g_mallocated string containing an error on failure. + */ +#ifdef _WIN32 +char * +configuration_init_w32(const char* arg0 _U_) +{ + TCHAR prog_pathname_w[_MAX_PATH+2]; + char *prog_pathname; + DWORD error; + TCHAR *msg_w; + unsigned char *msg; + size_t msglen; + + /* + * Attempt to get the full pathname of the currently running + * program. + */ + if (GetModuleFileName(NULL, prog_pathname_w, G_N_ELEMENTS(prog_pathname_w)) != 0 && GetLastError() != ERROR_INSUFFICIENT_BUFFER) { + /* + * XXX - Should we use g_utf16_to_utf8()? + */ + prog_pathname = utf_16to8(prog_pathname_w); + /* + * We got it; strip off the last component, which would be + * the file name of the executable, giving us the pathname + * of the directory where the executable resides. + */ + progfile_dir = g_path_get_dirname(prog_pathname); + if (progfile_dir != NULL) { + trim_progfile_dir(); + /* we succeeded */ + } else { + /* + * OK, no. What do we do now? + */ + return ws_strdup_printf("No \\ in executable pathname \"%s\"", + prog_pathname); + } + } else { + /* + * Oh, well. Return an indication of the error. + */ + error = GetLastError(); + if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, error, 0, (LPTSTR) &msg_w, 0, NULL) == 0) { + /* + * Gak. We can't format the message. + */ + return ws_strdup_printf("GetModuleFileName failed: %lu (FormatMessage failed: %lu)", + error, GetLastError()); + } + msg = utf_16to8(msg_w); + LocalFree(msg_w); + /* + * "FormatMessage()" "helpfully" sticks CR/LF at the + * end of the message. Get rid of it. + */ + msglen = strlen(msg); + if (msglen >= 2) { + msg[msglen - 1] = '\0'; + msg[msglen - 2] = '\0'; + } + return ws_strdup_printf("GetModuleFileName failed: %s (%lu)", + msg, error); + } + +#ifdef HAVE_MSYSTEM + /* + * We already have the program_dir. Find the installation prefix. + * This is one level up from the bin_dir. If the program_dir does + * not end with "bin" then assume we are running in the build directory + * and the "installation prefix" (staging directory) is the same as + * the program_dir. + */ + if (g_str_has_suffix(progfile_dir, _S"bin")) { + install_prefix = trim_last_dir_from_path(progfile_dir); + } + else { + install_prefix = g_strdup(progfile_dir); + running_in_build_directory_flag = true; + } +#endif /* HAVE_MSYSTEM */ + + return NULL; +} + +#else /* !_WIN32 */ + +char * +configuration_init_posix(const char* arg0) +{ + const char *execname; + char *prog_pathname; + char *curdir; + long path_max; + const char *pathstr; + const char *path_start, *path_end; + size_t path_component_len, path_len; + char *retstr; + char *path; + char *dir_end; + + /* Hard-coded value used if we cannot obtain the path of the running executable. */ + install_prefix = g_strdup(INSTALL_PREFIX); + + /* + * Check whether XXX_RUN_FROM_BUILD_DIRECTORY is set in the + * environment; if so, set running_in_build_directory_flag if we + * weren't started with special privileges. (If we were started + * with special privileges, it's not safe to allow the user to point + * us to some other directory; running_in_build_directory_flag, when + * set, causes us to look for plugins and the like in the build + * directory.) + */ + const char *run_from_envar = CONFIGURATION_ENVIRONMENT_VARIABLE("RUN_FROM_BUILD_DIRECTORY"); + if (g_getenv(run_from_envar) != NULL + && !started_with_special_privs()) { + running_in_build_directory_flag = true; + } + + execname = get_current_executable_path(); + if (execname == NULL) { + /* + * OK, guess based on argv[0]. + */ + execname = arg0; + } + + /* + * Try to figure out the directory in which the currently running + * program resides, given something purporting to be the executable + * name (from an OS mechanism or from the argv[0] it was started with). + * That might be the absolute path of the program, or a path relative + * to the current directory of the process that started it, or + * just a name for the program if it was started from the command + * line and was searched for in $PATH. It's not guaranteed to be + * any of those, however, so there are no guarantees.... + */ + if (execname[0] == '/') { + /* + * It's an absolute path. + */ + prog_pathname = g_strdup(execname); + } else if (strchr(execname, '/') != NULL) { + /* + * It's a relative path, with a directory in it. + * Get the current directory, and combine it + * with that directory. + */ + path_max = pathconf(".", _PC_PATH_MAX); + if (path_max == -1) { + /* + * We have no idea how big a buffer to + * allocate for the current directory. + */ + return ws_strdup_printf("pathconf failed: %s\n", + g_strerror(errno)); + } + curdir = (char *)g_malloc(path_max); + if (getcwd(curdir, path_max) == NULL) { + /* + * It failed - give up, and just stick + * with DATA_DIR. + */ + g_free(curdir); + return ws_strdup_printf("getcwd failed: %s\n", + g_strerror(errno)); + } + path = ws_strdup_printf("%s/%s", curdir, execname); + g_free(curdir); + prog_pathname = path; + } else { + /* + * It's just a file name. + * Search the path for a file with that name + * that's executable. + */ + prog_pathname = NULL; /* haven't found it yet */ + pathstr = g_getenv("PATH"); + path_start = pathstr; + if (path_start != NULL) { + while (*path_start != '\0') { + path_end = strchr(path_start, ':'); + if (path_end == NULL) + path_end = path_start + strlen(path_start); + path_component_len = path_end - path_start; + path_len = path_component_len + 1 + + strlen(execname) + 1; + path = (char *)g_malloc(path_len); + memcpy(path, path_start, path_component_len); + path[path_component_len] = '\0'; + (void) g_strlcat(path, "/", path_len); + (void) g_strlcat(path, execname, path_len); + if (access(path, X_OK) == 0) { + /* + * Found it! + */ + prog_pathname = path; + break; + } + + /* + * That's not it. If there are more + * path components to test, try them. + */ + if (*path_end == ':') + path_end++; + path_start = path_end; + g_free(path); + } + if (prog_pathname == NULL) { + /* + * Program not found in path. + */ + return ws_strdup_printf("\"%s\" not found in \"%s\"", + execname, pathstr); + } + } else { + /* + * PATH isn't set. + * XXX - should we pick a default? + */ + return g_strdup("PATH isn't set"); + } + } + + /* + * OK, we have what we think is the pathname + * of the program. + * + * First, find the last "/" in the directory, + * as that marks the end of the directory pathname. + */ + dir_end = strrchr(prog_pathname, '/'); + if (dir_end != NULL) { + /* + * Found it. Strip off the last component, + * as that's the path of the program. + */ + *dir_end = '\0'; + + /* + * Is there a "/run" at the end? + */ + dir_end = strrchr(prog_pathname, '/'); + if (dir_end != NULL) { + if (!started_with_special_privs()) { + /* + * Check for the CMake output directory. As people may name + * their directories "run" (really?), also check for the + * CMakeCache.txt file before assuming a CMake output dir. + */ + if (strcmp(dir_end, "/run") == 0) { + char *cmake_file; + cmake_file = ws_strdup_printf("%.*s/CMakeCache.txt", + (int)(dir_end - prog_pathname), + prog_pathname); + if (file_exists(cmake_file)) + running_in_build_directory_flag = true; + g_free(cmake_file); + } +#ifdef ENABLE_APPLICATION_BUNDLE + { + /* + * Scan up the path looking for a component + * named "Contents". If we find it, we assume + * we're in a bundle, and that the top-level + * directory of the bundle is the one containing + * "Contents". + * + * Not all executables are in the Contents/MacOS + * directory, so we can't just check for those + * in the path and strip them off. + * + * XXX - should we assume that it's either + * Contents/MacOS or Resources/bin? + */ + char *component_end, *p; + + component_end = strchr(prog_pathname, '\0'); + p = component_end; + for (;;) { + while (p >= prog_pathname && *p != '/') + p--; + if (p == prog_pathname) { + /* + * We're looking at the first component of + * the pathname now, so we're definitely + * not in a bundle, even if we're in + * "/Contents". + */ + break; + } + if (strncmp(p, "/Contents", component_end - p) == 0) { + /* Found it. */ + appbundle_dir = (char *)g_malloc(p - prog_pathname + 1); + memcpy(appbundle_dir, prog_pathname, p - prog_pathname); + appbundle_dir[p - prog_pathname] = '\0'; + break; + } + component_end = p; + p--; + } + } +#endif + } + } + + /* + * OK, we have the path we want. + */ + progfile_dir = prog_pathname; + trim_progfile_dir(); + } else { + /* + * This "shouldn't happen"; we apparently + * have no "/" in the pathname. + * Just free up prog_pathname. + */ + retstr = ws_strdup_printf("No / found in \"%s\"", prog_pathname); + g_free(prog_pathname); + return retstr; + } + + /* + * We already have the program_dir. Find the installation prefix. + * This is one level up from the bin_dir. If the program_dir does + * not end with "bin" then assume we are running in the build directory + * and the "installation prefix" (staging directory) is the same as + * the program_dir. + */ + g_free(install_prefix); + if (g_str_has_suffix(progfile_dir, _S"bin")) { + install_prefix = trim_last_dir_from_path(progfile_dir); + } + else { + install_prefix = g_strdup(progfile_dir); + running_in_build_directory_flag = true; + } + + return NULL; +} +#endif /* ?_WIN32 */ + +char * +configuration_init(const char* arg0, const char *namespace_name) +{ + set_configuration_namespace(namespace_name); + +#ifdef _WIN32 + return configuration_init_w32(arg0); +#else + return configuration_init_posix(arg0); +#endif +} + +/* + * Get the directory in which the program resides. + */ +const char * +get_progfile_dir(void) +{ + return progfile_dir; +} + +/* + * Get the directory in which the global configuration and data files are + * stored. + * + * On Windows, we use the directory in which the executable for this + * process resides. + * + * On macOS (when executed from an app bundle), use a directory within + * that app bundle. + * + * Otherwise, if the program was executed from the build directory, use the + * directory in which the executable for this process resides. In all other + * cases, use the DATA_DIR value that was set at compile time. + * + * XXX - if we ever make libwireshark a real library, used by multiple + * applications (more than just TShark and versions of Wireshark with + * various UIs), should the configuration files belong to the library + * (and be shared by all those applications) or to the applications? + * + * If they belong to the library, that could be done on UNIX by the + * configure script, but it's trickier on Windows, as you can't just + * use the pathname of the executable. + * + * If they belong to the application, that could be done on Windows + * by using the pathname of the executable, but we'd have to have it + * passed in as an argument, in some call, on UNIX. + * + * Note that some of those configuration files might be used by code in + * libwireshark, some of them might be used by dissectors (would they + * belong to libwireshark, the application, or a separate library?), + * and some of them might be used by other code (the Wireshark preferences + * file includes resolver preferences that control the behavior of code + * in libwireshark, dissector preferences, and UI preferences, for + * example). + */ +const char * +get_datafile_dir(void) +{ + if (datafile_dir != NULL) + return datafile_dir; + + const char *data_dir_envar = CONFIGURATION_ENVIRONMENT_VARIABLE("DATA_DIR"); + if (g_getenv(data_dir_envar) && !started_with_special_privs()) { + /* + * The user specified a different directory for data files + * and we aren't running with special privileges. + * Let {WIRESHARK,LOGRAY}_DATA_DIR take precedence. + * XXX - We might be able to dispense with the priv check + */ + datafile_dir = g_strdup(g_getenv(data_dir_envar)); + return datafile_dir; + } + +#if defined(HAVE_MSYSTEM) + if (running_in_build_directory_flag) { + datafile_dir = g_strdup(install_prefix); + } else { + datafile_dir = g_build_filename(install_prefix, DATA_DIR, (char *)NULL); + } +#elif defined(_WIN32) + /* + * Do we have the pathname of the program? If so, assume we're + * running an installed version of the program. If we fail, + * we don't change "datafile_dir", and thus end up using the + * default. + * + * XXX - does NSIS put the installation directory into + * "\HKEY_LOCAL_MACHINE\SOFTWARE\Wireshark\InstallDir"? + * If so, perhaps we should read that from the registry, + * instead. + */ + if (progfile_dir != NULL) { + /* + * Yes, we do; use that. + */ + datafile_dir = g_strdup(progfile_dir); + } else { + /* + * No, we don't. + * Fall back on the default installation directory. + */ + datafile_dir = g_strdup("C:\\Program Files\\Wireshark\\"); + } +#else +#ifdef ENABLE_APPLICATION_BUNDLE + /* + * If we're running from an app bundle and weren't started + * with special privileges, use the Contents/Resources/share/wireshark + * subdirectory of the app bundle. + * + * (appbundle_dir is not set to a non-null value if we're + * started with special privileges, so we need only check + * it; we don't need to call started_with_special_privs().) + */ + else if (appbundle_dir != NULL) { + datafile_dir = ws_strdup_printf("%s/Contents/Resources/share/%s", + appbundle_dir, CONFIGURATION_NAMESPACE_LOWER); + } +#endif + else if (running_in_build_directory_flag && progfile_dir != NULL) { + /* + * We're (probably) being run from the build directory and + * weren't started with special privileges. + * + * (running_in_build_directory_flag is never set to true + * if we're started with special privileges, so we need + * only check it; we don't need to call started_with_special_privs().) + * + * Data files (dtds/, radius/, etc.) are copied to the build + * directory during the build which also contains executables. A special + * exception is macOS (when built with an app bundle). + */ + datafile_dir = g_strdup(progfile_dir); + } else { + datafile_dir = g_build_filename(install_prefix, DATA_DIR, (char *)NULL); + } +#endif + return datafile_dir; +} + +const char * +get_doc_dir(void) +{ + if (doc_dir != NULL) + return doc_dir; + + /* No environment variable for this. */ + if (false) { + ; + } + +#if defined(HAVE_MSYSTEM) + if (running_in_build_directory_flag) { + doc_dir = g_strdup(install_prefix); + } else { + doc_dir = g_build_filename(install_prefix, DOC_DIR, (char *)NULL); + } +#elif defined(_WIN32) + if (progfile_dir != NULL) { + doc_dir = g_strdup(progfile_dir); + } else { + /* Fall back on the default installation directory. */ + doc_dir = g_strdup("C:\\Program Files\\Wireshark\\"); + } +#else +#ifdef ENABLE_APPLICATION_BUNDLE + /* + * If we're running from an app bundle and weren't started + * with special privileges, use the Contents/Resources/share/wireshark + * subdirectory of the app bundle. + * + * (appbundle_dir is not set to a non-null value if we're + * started with special privileges, so we need only check + * it; we don't need to call started_with_special_privs().) + */ + else if (appbundle_dir != NULL) { + doc_dir = ws_strdup_printf("%s/Contents/Resources/%s", + appbundle_dir, DOC_DIR); + } +#endif + else if (running_in_build_directory_flag && progfile_dir != NULL) { + /* + * We're (probably) being run from the build directory and + * weren't started with special privileges. + */ + doc_dir = g_strdup(progfile_dir); + } else { + doc_dir = g_build_filename(install_prefix, DOC_DIR, (char *)NULL); + } +#endif + return doc_dir; +} + +/* + * Find the directory where the plugins are stored. + * + * On Windows, we use the plugin\{VERSION} subdirectory of the datafile + * directory, where {VERSION} is the version number of this version of + * Wireshark. + * + * On UN*X: + * + * if we appear to be run from the build directory, we use the + * "plugin" subdirectory of the datafile directory; + * + * otherwise, if the WIRESHARK_PLUGIN_DIR environment variable is + * set and we aren't running with special privileges, we use the + * value of that environment variable; + * + * otherwise, if we're running from an app bundle in macOS, we + * use the Contents/PlugIns/wireshark subdirectory of the app bundle; + * + * otherwise, we use the PLUGIN_DIR value supplied by the + * configure script. + */ +static char *plugin_dir = NULL; +static char *plugin_dir_with_version = NULL; +static char *plugin_pers_dir = NULL; +static char *plugin_pers_dir_with_version = NULL; +static char *extcap_pers_dir = NULL; + +static void +init_plugin_dir(void) +{ + const char *plugin_dir_envar = CONFIGURATION_ENVIRONMENT_VARIABLE("PLUGIN_DIR"); + if (g_getenv(plugin_dir_envar) && !started_with_special_privs()) { + /* + * The user specified a different directory for plugins + * and we aren't running with special privileges. + * Let {WIRESHARK,LOGRAY}_PLUGIN_DIR take precedence. + */ + plugin_dir = g_strdup(g_getenv(plugin_dir_envar)); + return; + } + +#if defined(HAVE_PLUGINS) || defined(HAVE_LUA) +#if defined(HAVE_MSYSTEM) + if (running_in_build_directory_flag) { + plugin_dir = g_build_filename(install_prefix, "plugins", (char *)NULL); + } else { + plugin_dir = g_build_filename(install_prefix, PLUGIN_DIR, (char *)NULL); + } +#elif defined(_WIN32) + /* + * On Windows, the data file directory is the installation + * directory; the plugins are stored under it. + * + * Assume we're running the installed version of Wireshark; + * on Windows, the data file directory is the directory + * in which the Wireshark binary resides. + */ + plugin_dir = g_build_filename(get_datafile_dir(), "plugins", (char *)NULL); + + /* + * Make sure that pathname refers to a directory. + */ + if (test_for_directory(plugin_dir) != EISDIR) { + /* + * Either it doesn't refer to a directory or it + * refers to something that doesn't exist. + * + * Assume that means we're running a version of + * Wireshark we've built in a build directory, + * in which case {datafile dir}\plugins is the + * top-level plugins source directory, and use + * that directory and set the "we're running in + * a build directory" flag, so the plugin + * scanner will check all subdirectories of that + * directory for plugins. + */ + g_free(plugin_dir); + plugin_dir = g_build_filename(get_datafile_dir(), "plugins", (char *)NULL); + running_in_build_directory_flag = true; + } +#else +#ifdef ENABLE_APPLICATION_BUNDLE + /* + * If we're running from an app bundle and weren't started + * with special privileges, use the Contents/PlugIns/wireshark + * subdirectory of the app bundle. + * + * (appbundle_dir is not set to a non-null value if we're + * started with special privileges, so we need only check + * it; we don't need to call started_with_special_privs().) + */ + else if (appbundle_dir != NULL) { + plugin_dir = g_build_filename(appbundle_dir, "Contents/PlugIns", + CONFIGURATION_NAMESPACE_LOWER, (char *)NULL); + } +#endif + else if (running_in_build_directory_flag) { + /* + * We're (probably) being run from the build directory and + * weren't started with special privileges, so we'll use + * the "plugins" subdirectory of the directory where the program + * we're running is (that's the build directory). + */ + plugin_dir = g_build_filename(get_progfile_dir(), "plugins", (char *)NULL); + } else { + plugin_dir = g_build_filename(install_prefix, PLUGIN_DIR, (char *)NULL); + } +#endif +#endif /* defined(HAVE_PLUGINS) || defined(HAVE_LUA) */ +} + +static void +init_plugin_pers_dir(void) +{ +#if defined(HAVE_PLUGINS) || defined(HAVE_LUA) +#ifdef _WIN32 + plugin_pers_dir = get_persconffile_path(PLUGINS_DIR_NAME, false); +#else + plugin_pers_dir = g_build_filename(g_get_home_dir(), ".local/lib", + CONFIGURATION_NAMESPACE_LOWER, PLUGINS_DIR_NAME, (char *)NULL); +#endif +#endif /* defined(HAVE_PLUGINS) || defined(HAVE_LUA) */ +} + +/* + * Get the directory in which the plugins are stored. + */ +const char * +get_plugins_dir(void) +{ + if (!plugin_dir) + init_plugin_dir(); + return plugin_dir; +} + +const char * +get_plugins_dir_with_version(void) +{ + if (!plugin_dir) + init_plugin_dir(); + if (plugin_dir && !plugin_dir_with_version) + plugin_dir_with_version = g_build_filename(plugin_dir, PLUGIN_PATH_ID, (char *)NULL); + return plugin_dir_with_version; +} + +/* Get the personal plugin dir */ +const char * +get_plugins_pers_dir(void) +{ + if (!plugin_pers_dir) + init_plugin_pers_dir(); + return plugin_pers_dir; +} + +const char * +get_plugins_pers_dir_with_version(void) +{ + if (!plugin_pers_dir) + init_plugin_pers_dir(); + if (plugin_pers_dir && !plugin_pers_dir_with_version) + plugin_pers_dir_with_version = g_build_filename(plugin_pers_dir, PLUGIN_PATH_ID, (char *)NULL); + return plugin_pers_dir_with_version; +} + +/* + * Find the directory where the extcap hooks are stored. + * + * If the WIRESHARK_EXTCAP_DIR environment variable is set and we are not + * running with special privileges, use that. Otherwise: + * + * On Windows, we use the "extcap" subdirectory of the datafile directory. + * + * On UN*X: + * + * if we appear to be run from the build directory, we use the + * "extcap" subdirectory of the build directory. + * + * otherwise, if we're running from an app bundle in macOS, we + * use the Contents/MacOS/extcap subdirectory of the app bundle; + * + * otherwise, we use the EXTCAP_DIR value supplied by CMake. + */ +static char *extcap_dir = NULL; + +static void +init_extcap_dir(void) +{ + const char *extcap_dir_envar = CONFIGURATION_ENVIRONMENT_VARIABLE("EXTCAP_DIR"); + if (g_getenv(extcap_dir_envar) && !started_with_special_privs()) { + /* + * The user specified a different directory for extcap hooks + * and we aren't running with special privileges. + */ + extcap_dir = g_strdup(g_getenv(extcap_dir_envar)); + } + +#if defined(HAVE_MSYSTEM) + else if (running_in_build_directory_flag) { + extcap_dir = g_build_filename(install_prefix, "extcap", (char *)NULL); + } else { + extcap_dir = g_build_filename(install_prefix, EXTCAP_DIR, (char *)NULL); + } +#elif defined(_WIN32) + else { + /* + * On Windows, the data file directory is the installation + * directory; the extcap hooks are stored under it. + * + * Assume we're running the installed version of Wireshark; + * on Windows, the data file directory is the directory + * in which the Wireshark binary resides. + */ + extcap_dir = g_build_filename(get_datafile_dir(), "extcap", (char *)NULL); + } +#else + else if (running_in_build_directory_flag) { + /* + * We're (probably) being run from the build directory and + * weren't started with special privileges, so we'll use + * the "extcap hooks" subdirectory of the directory where the program + * we're running is (that's the build directory). + */ + extcap_dir = g_build_filename(get_progfile_dir(), "extcap", (char *)NULL); + } +#ifdef ENABLE_APPLICATION_BUNDLE + else if (appbundle_dir != NULL) { + /* + * If we're running from an app bundle and weren't started + * with special privileges, use the Contents/MacOS/extcap + * subdirectory of the app bundle. + * + * (appbundle_dir is not set to a non-null value if we're + * started with special privileges, so we need only check + * it; we don't need to call started_with_special_privs().) + */ + extcap_dir = g_build_filename(appbundle_dir, "Contents/MacOS/extcap", (char *)NULL); + } +#endif + else { + extcap_dir = g_build_filename(install_prefix, EXTCAP_DIR, (char *)NULL); + } +#endif +} + +static void +init_extcap_pers_dir(void) +{ +#ifdef _WIN32 + extcap_pers_dir = get_persconffile_path(EXTCAP_DIR_NAME, false); +#else + extcap_pers_dir = g_build_filename(g_get_home_dir(), ".local/lib", + CONFIGURATION_NAMESPACE_LOWER, EXTCAP_DIR_NAME, (char *)NULL); +#endif +} + +/* + * Get the directory in which the extcap hooks are stored. + * + */ +const char * +get_extcap_dir(void) +{ + if (!extcap_dir) + init_extcap_dir(); + return extcap_dir; +} + +/* Get the personal plugin dir */ +const char * +get_extcap_pers_dir(void) +{ + if (!extcap_pers_dir) + init_extcap_pers_dir(); + return extcap_pers_dir; +} + +/* + * Get the flag indicating whether we're running from a build + * directory. + */ +bool +running_in_build_directory(void) +{ + return running_in_build_directory_flag; +} + +/* + * Get the directory in which files that, at least on UNIX, are + * system files (such as "/etc/ethers") are stored; on Windows, + * there's no "/etc" directory, so we get them from the global + * configuration and data file directory. + */ +const char * +get_systemfile_dir(void) +{ +#ifdef _WIN32 + return get_datafile_dir(); +#else + return "/etc"; +#endif +} + +void +set_profile_name(const char *profilename) +{ + g_free (persconfprofile); + + if (profilename && strlen(profilename) > 0 && + strcmp(profilename, DEFAULT_PROFILE) != 0) { + persconfprofile = g_strdup (profilename); + } else { + /* Default Profile */ + persconfprofile = NULL; + } +} + +const char * +get_profile_name(void) +{ + if (persconfprofile) { + return persconfprofile; + } else { + return DEFAULT_PROFILE; + } +} + +bool +is_default_profile(void) +{ + return (!persconfprofile || strcmp(persconfprofile, DEFAULT_PROFILE) == 0) ? true : false; +} + +bool +has_global_profiles(void) +{ + WS_DIR *dir; + WS_DIRENT *file; + char *global_dir = get_global_profiles_dir(); + char *filename; + bool has_global = false; + + if ((test_for_directory(global_dir) == EISDIR) && + ((dir = ws_dir_open(global_dir, 0, NULL)) != NULL)) + { + while ((file = ws_dir_read_name(dir)) != NULL) { + filename = ws_strdup_printf ("%s%s%s", global_dir, G_DIR_SEPARATOR_S, + ws_dir_get_name(file)); + if (test_for_directory(filename) == EISDIR) { + has_global = true; + g_free (filename); + break; + } + g_free (filename); + } + ws_dir_close(dir); + } + g_free(global_dir); + return has_global; +} + +void +profile_store_persconffiles(bool store) +{ + if (store) { + profile_files = g_hash_table_new (g_str_hash, g_str_equal); + } + do_store_persconffiles = store; +} + +void +profile_register_persconffile(const char *filename) +{ + if (do_store_persconffiles && !g_hash_table_lookup (profile_files, filename)) { + /* Store filenames so we know which filenames belongs to a configuration profile */ + g_hash_table_insert (profile_files, g_strdup(filename), g_strdup(filename)); + } +} + +/* + * Get the directory in which personal configuration files reside. + * + * On Windows, it's "Wireshark", under %APPDATA% or, if %APPDATA% isn't set, + * it's "%USERPROFILE%\Application Data" (which is what %APPDATA% normally + * is on Windows 2000). + * + * On UNIX-compatible systems, we first look in XDG_CONFIG_HOME/wireshark + * and, if that doesn't exist, ~/.wireshark, for backwards compatibility. + * If neither exists, we use XDG_CONFIG_HOME/wireshark, so that the directory + * is initially created as XDG_CONFIG_HOME/wireshark. We use that regardless + * of whether the user is running under an XDG desktop or not, so that + * if the user's home directory is on a server and shared between + * different desktop environments on different machines, they can all + * share the same configuration file directory. + * + * XXX - what about stuff that shouldn't be shared between machines, + * such as plugins in the form of shared loadable images? + */ +static const char * +get_persconffile_dir_no_profile(void) +{ + const char *env; + + /* Return the cached value, if available */ + if (persconffile_dir != NULL) + return persconffile_dir; + + /* + * See if the user has selected an alternate environment. + */ + const char *config_dir_envar = CONFIGURATION_ENVIRONMENT_VARIABLE("CONFIG_DIR"); + env = g_getenv(config_dir_envar); +#ifdef _WIN32 + if (env == NULL) { + /* for backward compatibility */ + env = g_getenv("WIRESHARK_APPDATA"); + } +#endif + if (env != NULL) { + persconffile_dir = g_strdup(env); + return persconffile_dir; + } + +#ifdef _WIN32 + /* + * Use %APPDATA% or %USERPROFILE%, so that configuration + * files are stored in the user profile, rather than in + * the home directory. The Windows convention is to store + * configuration information in the user profile, and doing + * so means you can use Wireshark even if the home directory + * is an inaccessible network drive. + */ + env = g_getenv("APPDATA"); + const char *persconf_namespace = CONFIGURATION_NAMESPACE_PROPER; + if (env != NULL) { + /* + * Concatenate %APPDATA% with "\Wireshark" or "\Logray". + */ + persconffile_dir = g_build_filename(env, persconf_namespace, NULL); + return persconffile_dir; + } + + /* + * OK, %APPDATA% wasn't set, so use %USERPROFILE%\Application Data. + */ + env = g_getenv("USERPROFILE"); + if (env != NULL) { + persconffile_dir = g_build_filename(env, "Application Data", persconf_namespace, NULL); + return persconffile_dir; + } + + /* + * Give up and use "C:". + */ + persconffile_dir = g_build_filename("C:", persconf_namespace, NULL); + return persconffile_dir; +#else + char *xdg_path, *path; + struct passwd *pwd; + const char *homedir; + + /* + * Check if XDG_CONFIG_HOME/wireshark exists and is a directory. + */ + xdg_path = g_build_filename(g_get_user_config_dir(), + CONFIGURATION_NAMESPACE_LOWER, NULL); + if (g_file_test(xdg_path, G_FILE_TEST_IS_DIR)) { + persconffile_dir = xdg_path; + return persconffile_dir; + } + + /* + * It doesn't exist, or it does but isn't a directory, so try + * ~/.wireshark. + * + * If $HOME is set, use that for ~. + * + * (Note: before GLib 2.36, g_get_home_dir() didn't look at $HOME, + * but we always want to do so, so we don't use g_get_home_dir().) + */ + homedir = g_getenv("HOME"); + if (homedir == NULL) { + /* + * It's not set. + * + * Get their home directory from the password file. + * If we can't even find a password file entry for them, + * use "/tmp". + */ + pwd = getpwuid(getuid()); + if (pwd != NULL) { + homedir = pwd->pw_dir; + } else { + homedir = "/tmp"; + } + } + path = g_build_filename(homedir, + configuration_namespace == CONFIGURATION_NAMESPACE_WIRESHARK ? ".wireshark" : ".logray", + NULL); + if (g_file_test(path, G_FILE_TEST_IS_DIR)) { + g_free(xdg_path); + persconffile_dir = path; + return persconffile_dir; + } + + /* + * Neither are directories that exist; use the XDG path, so we'll + * create that as necessary. + */ + g_free(path); + persconffile_dir = xdg_path; + return persconffile_dir; +#endif +} + +void +set_persconffile_dir(const char *p) +{ + g_free(persconffile_dir); + persconffile_dir = g_strdup(p); +} + +char * +get_profiles_dir(void) +{ + return ws_strdup_printf ("%s%s%s", get_persconffile_dir_no_profile (), + G_DIR_SEPARATOR_S, PROFILES_DIR); +} + +int +create_profiles_dir(char **pf_dir_path_return) +{ + char *pf_dir_path; + ws_statb64 s_buf; + + /* + * Create the "Default" personal configuration files directory, if necessary. + */ + if (create_persconffile_profile (NULL, pf_dir_path_return) == -1) { + return -1; + } + + /* + * Check if profiles directory exists. + * If not then create it. + */ + pf_dir_path = get_profiles_dir (); + if (ws_stat64(pf_dir_path, &s_buf) != 0) { + if (errno != ENOENT) { + /* Some other problem; give up now. */ + *pf_dir_path_return = pf_dir_path; + return -1; + } + + /* + * It doesn't exist; try to create it. + */ + int ret = ws_mkdir(pf_dir_path, 0755); + if (ret == -1) { + *pf_dir_path_return = pf_dir_path; + return ret; + } + } + g_free(pf_dir_path); + + return 0; +} + +char * +get_global_profiles_dir(void) +{ + return ws_strdup_printf ("%s%s%s", get_datafile_dir(), + G_DIR_SEPARATOR_S, PROFILES_DIR); +} + +static char * +get_persconffile_dir(const char *profilename) +{ + char *persconffile_profile_dir = NULL, *profile_dir; + + if (profilename && strlen(profilename) > 0 && + strcmp(profilename, DEFAULT_PROFILE) != 0) { + profile_dir = get_profiles_dir(); + persconffile_profile_dir = ws_strdup_printf ("%s%s%s", profile_dir, + G_DIR_SEPARATOR_S, profilename); + g_free(profile_dir); + } else { + persconffile_profile_dir = g_strdup (get_persconffile_dir_no_profile ()); + } + + return persconffile_profile_dir; +} + +char * +get_profile_dir(const char *profilename, bool is_global) +{ + char *profile_dir; + + if (is_global) { + if (profilename && strlen(profilename) > 0 && + strcmp(profilename, DEFAULT_PROFILE) != 0) + { + char *global_path = get_global_profiles_dir(); + profile_dir = g_build_filename(global_path, profilename, NULL); + g_free(global_path); + } else { + profile_dir = g_strdup(get_datafile_dir()); + } + } else { + /* + * If we didn't supply a profile name, i.e. if profilename is + * null, get_persconffile_dir() returns the default profile. + */ + profile_dir = get_persconffile_dir(profilename); + } + + return profile_dir; +} + +bool +profile_exists(const char *profilename, bool global) +{ + char *path = NULL; + bool exists; + + /* + * If we're looking up a global profile, we must have a + * profile name. + */ + if (global && !profilename) + return false; + + path = get_profile_dir(profilename, global); + exists = (test_for_directory(path) == EISDIR) ? true : false; + + g_free(path); + return exists; +} + +static int +delete_directory (const char *directory, char **pf_dir_path_return) +{ + WS_DIR *dir; + WS_DIRENT *file; + char *filename; + int ret = 0; + + if ((dir = ws_dir_open(directory, 0, NULL)) != NULL) { + while ((file = ws_dir_read_name(dir)) != NULL) { + filename = ws_strdup_printf ("%s%s%s", directory, G_DIR_SEPARATOR_S, + ws_dir_get_name(file)); + if (test_for_directory(filename) != EISDIR) { + ret = ws_remove(filename); +#if 0 + } else { + /* The user has manually created a directory in the profile directory */ + /* I do not want to delete the directory recursively yet */ + ret = delete_directory (filename, pf_dir_path_return); +#endif + } + if (ret != 0) { + *pf_dir_path_return = filename; + break; + } + g_free (filename); + } + ws_dir_close(dir); + } + + if (ret == 0 && (ret = ws_remove(directory)) != 0) { + *pf_dir_path_return = g_strdup (directory); + } + + return ret; +} + +/* Copy files from one directory to another. Does not recursively copy directories */ +static int +copy_directory(const char *from_dir, const char *to_dir, char **pf_filename_return) +{ + int ret = 0; + char *from_file, *to_file; + const char *filename; + WS_DIR *dir; + WS_DIRENT *file; + + if ((dir = ws_dir_open(from_dir, 0, NULL)) != NULL) { + while ((file = ws_dir_read_name(dir)) != NULL) { + filename = ws_dir_get_name(file); + from_file = ws_strdup_printf ("%s%s%s", from_dir, G_DIR_SEPARATOR_S, filename); + if (test_for_directory(from_file) != EISDIR) { + to_file = ws_strdup_printf ("%s%s%s", to_dir, G_DIR_SEPARATOR_S, filename); + if (!copy_file_binary_mode(from_file, to_file)) { + *pf_filename_return = g_strdup(filename); + g_free (from_file); + g_free (to_file); + ret = -1; + break; + } + g_free (to_file); +#if 0 + } else { + /* The user has manually created a directory in the profile + * directory. Do not copy the directory recursively (yet?) + */ +#endif + } + g_free (from_file); + } + ws_dir_close(dir); + } + + return ret; +} + +static int +reset_default_profile(char **pf_dir_path_return) +{ + char *profile_dir = get_persconffile_dir(NULL); + char *filename, *del_file; + GList *files, *file; + int ret = 0; + + files = g_hash_table_get_keys(profile_files); + file = g_list_first(files); + while (file) { + filename = (char *)file->data; + del_file = ws_strdup_printf("%s%s%s", profile_dir, G_DIR_SEPARATOR_S, filename); + + if (file_exists(del_file)) { + ret = ws_remove(del_file); + if (ret != 0) { + *pf_dir_path_return = profile_dir; + g_free(del_file); + break; + } + } + + g_free(del_file); + file = g_list_next(file); + } + g_list_free(files); + + g_free(profile_dir); + return ret; +} + +int +delete_persconffile_profile(const char *profilename, char **pf_dir_path_return) +{ + if (strcmp(profilename, DEFAULT_PROFILE) == 0) { + return reset_default_profile(pf_dir_path_return); + } + + char *profile_dir = get_persconffile_dir(profilename); + int ret = 0; + + if (test_for_directory (profile_dir) == EISDIR) { + ret = delete_directory (profile_dir, pf_dir_path_return); + } + + g_free(profile_dir); + return ret; +} + +int +rename_persconffile_profile(const char *fromname, const char *toname, + char **pf_from_dir_path_return, char **pf_to_dir_path_return) +{ + char *from_dir = get_persconffile_dir(fromname); + char *to_dir = get_persconffile_dir(toname); + int ret = 0; + + ret = ws_rename (from_dir, to_dir); + if (ret != 0) { + *pf_from_dir_path_return = from_dir; + *pf_to_dir_path_return = to_dir; + return ret; + } + + g_free (from_dir); + g_free (to_dir); + + return 0; +} + +/* + * Create the directory that holds personal configuration files, if + * necessary. If we attempted to create it, and failed, return -1 and + * set "*pf_dir_path_return" to the pathname of the directory we failed + * to create (it's g_mallocated, so our caller should free it); otherwise, + * return 0. + */ +int +create_persconffile_profile(const char *profilename, char **pf_dir_path_return) +{ + char *pf_dir_path; +#ifdef _WIN32 + char *pf_dir_path_copy, *pf_dir_parent_path; + size_t pf_dir_parent_path_len; + int save_errno; +#endif + ws_statb64 s_buf; + int ret; + + if (profilename) { + /* + * Create the personal profiles directory, if necessary. + */ + if (create_profiles_dir(pf_dir_path_return) == -1) { + return -1; + } + } + + pf_dir_path = get_persconffile_dir(profilename); + if (ws_stat64(pf_dir_path, &s_buf) != 0) { + if (errno != ENOENT) { + /* Some other problem; give up now. */ + *pf_dir_path_return = pf_dir_path; + return -1; + } +#ifdef _WIN32 + /* + * Does the parent directory of that directory + * exist? %APPDATA% may not exist even though + * %USERPROFILE% does. + * + * We check for the existence of the directory + * by first checking whether the parent directory + * is just a drive letter and, if it's not, by + * doing a "stat()" on it. If it's a drive letter, + * or if the "stat()" succeeds, we assume it exists. + */ + pf_dir_path_copy = g_strdup(pf_dir_path); + pf_dir_parent_path = get_dirname(pf_dir_path_copy); + pf_dir_parent_path_len = strlen(pf_dir_parent_path); + if (pf_dir_parent_path_len > 0 + && pf_dir_parent_path[pf_dir_parent_path_len - 1] != ':' + && ws_stat64(pf_dir_parent_path, &s_buf) != 0) { + /* + * Not a drive letter and the stat() failed. + */ + if (errno != ENOENT) { + /* Some other problem; give up now. */ + *pf_dir_path_return = pf_dir_path; + save_errno = errno; + g_free(pf_dir_path_copy); + errno = save_errno; + return -1; + } + /* + * No, it doesn't exist - make it first. + */ + ret = ws_mkdir(pf_dir_parent_path, 0755); + if (ret == -1) { + *pf_dir_path_return = pf_dir_parent_path; + save_errno = errno; + g_free(pf_dir_path); + errno = save_errno; + return -1; + } + } + g_free(pf_dir_path_copy); + ret = ws_mkdir(pf_dir_path, 0755); +#else + ret = g_mkdir_with_parents(pf_dir_path, 0755); +#endif + } else { + /* + * Something with that pathname exists; if it's not + * a directory, we'll get an error if we try to put + * something in it, so we don't fail here, we wait + * for that attempt to fail. + */ + ret = 0; + } + if (ret == -1) + *pf_dir_path_return = pf_dir_path; + else + g_free(pf_dir_path); + + return ret; +} + +const GHashTable * +allowed_profile_filenames(void) +{ + return profile_files; +} + +int +create_persconffile_dir(char **pf_dir_path_return) +{ + return create_persconffile_profile(persconfprofile, pf_dir_path_return); +} + +int +copy_persconffile_profile(const char *toname, const char *fromname, bool from_global, + char **pf_filename_return, char **pf_to_dir_path_return, char **pf_from_dir_path_return) +{ + int ret = 0; + char *from_dir; + char *to_dir = get_persconffile_dir(toname); + char *from_file, *to_file; + const char *filename; + GHashTableIter files; + void * file; + + from_dir = get_profile_dir(fromname, from_global); + + if (!profile_files || do_store_persconffiles) { + /* Either the profile_files hashtable does not exist yet + * (this is very early in startup) or we are still adding + * files to it. Just copy all the non-directories. + */ + ret = copy_directory(from_dir, to_dir, pf_filename_return); + } else { + + g_hash_table_iter_init(&files, profile_files); + while (g_hash_table_iter_next(&files, &file, NULL)) { + filename = (const char *)file; + from_file = ws_strdup_printf ("%s%s%s", from_dir, G_DIR_SEPARATOR_S, filename); + to_file = ws_strdup_printf ("%s%s%s", to_dir, G_DIR_SEPARATOR_S, filename); + + if (file_exists(from_file) && !copy_file_binary_mode(from_file, to_file)) { + *pf_filename_return = g_strdup(filename); + g_free (from_file); + g_free (to_file); + ret = -1; + break; + } + + g_free (to_file); + g_free (from_file); + } + } + + if (ret != 0) { + *pf_to_dir_path_return = to_dir; + *pf_from_dir_path_return = from_dir; + } else { + g_free (to_dir); + g_free (from_dir); + } + + return ret; +} + +/* + * Get the (default) directory in which personal data is stored. + * + * On Win32, this is the "My Documents" folder in the personal profile. + * On UNIX this is simply the current directory, unless that's "/", + * which it will be, for example, when Wireshark is run from the + * Finder in macOS, in which case we use the user's home directory. + */ +/* XXX - should this and the get_home_dir() be merged? */ +extern const char * +get_persdatafile_dir(void) +{ + /* Return the cached value, if available */ + if (persdatafile_dir != NULL) + return persdatafile_dir; + +#ifdef _WIN32 + TCHAR tszPath[MAX_PATH]; + + /* + * Hint: SHGetFolderPath is not available on MSVC 6 - without + * Platform SDK + */ + if (SHGetSpecialFolderPath(NULL, tszPath, CSIDL_PERSONAL, false)) { + persdatafile_dir = g_utf16_to_utf8(tszPath, -1, NULL, NULL, NULL); + return persdatafile_dir; + } else { + return ""; + } +#else + /* + * Get the current directory. + */ + persdatafile_dir = g_get_current_dir(); + if (persdatafile_dir == NULL) { + /* XXX - can this fail? */ + /* + * g_get_home_dir() returns a const gchar *; g_strdup() it + * so that it's something that can be freed. + */ + persdatafile_dir = g_strdup(g_get_home_dir()); + } else if (strcmp(persdatafile_dir, "/") == 0) { + g_free(persdatafile_dir); + /* + * See above. + */ + persdatafile_dir = g_strdup(g_get_home_dir()); + } + return persdatafile_dir; +#endif +} + +void +set_persdatafile_dir(const char *p) +{ + g_free(persdatafile_dir); + persdatafile_dir = g_strdup(p); +} + +/* + * Construct the path name of a personal configuration file, given the + * file name. + * + * On Win32, if "for_writing" is false, we check whether the file exists + * and, if not, construct a path name relative to the ".wireshark" + * subdirectory of the user's home directory, and check whether that + * exists; if it does, we return that, so that configuration files + * from earlier versions can be read. + * + * The returned file name was g_malloc()'d so it must be g_free()d when the + * caller is done with it. + */ +char * +get_persconffile_path(const char *filename, bool from_profile) +{ + char *path, *dir = NULL; + + if (from_profile) { + /* Store filenames so we know which filenames belongs to a configuration profile */ + profile_register_persconffile(filename); + + dir = get_persconffile_dir(persconfprofile); + } else { + dir = get_persconffile_dir(NULL); + } + path = g_build_filename(dir, filename, NULL); + + g_free(dir); + return path; +} + +/* + * Construct the path name of a global configuration file, given the + * file name. + * + * The returned file name was g_malloc()'d so it must be g_free()d when the + * caller is done with it. + */ +char * +get_datafile_path(const char *filename) +{ + if (running_in_build_directory_flag && !strcmp(filename, "hosts")) { + /* We're running in the build directory and the requested file is a + * generated (or a test) file. Return the file name in the build + * directory (not in the source/data directory). + * (Oh the things we do to keep the source directory pristine...) + */ + return g_build_filename(get_progfile_dir(), filename, (char *)NULL); + } else { + return g_build_filename(get_datafile_dir(), filename, (char *)NULL); + } +} + +/* + * Construct the path name of a global documentation file, given the + * file name. + * + * The returned file name was g_malloc()'d so it must be g_free()d when the + * caller is done with it. + */ +char * +get_docfile_path(const char *filename) +{ + if (running_in_build_directory_flag) { + /* We're running in the build directory and the requested file is a + * generated (or a test) file. Return the file name in the build + * directory (not in the source/data directory). + * (Oh the things we do to keep the source directory pristine...) + */ + return g_build_filename(get_progfile_dir(), filename, (char *)NULL); + } else { + return g_build_filename(get_doc_dir(), filename, (char *)NULL); + } +} + +/* + * Return an error message for UNIX-style errno indications on open or + * create operations. + */ +const char * +file_open_error_message(int err, bool for_writing) +{ + const char *errmsg; + static char errmsg_errno[1024+1]; + + switch (err) { + + case ENOENT: + if (for_writing) + errmsg = "The path to the file \"%s\" doesn't exist."; + else + errmsg = "The file \"%s\" doesn't exist."; + break; + + case EACCES: + if (for_writing) + errmsg = "You don't have permission to create or write to the file \"%s\"."; + else + errmsg = "You don't have permission to read the file \"%s\"."; + break; + + case EISDIR: + errmsg = "\"%s\" is a directory (folder), not a file."; + break; + + case ENOSPC: + errmsg = "The file \"%s\" could not be created because there is no space left on the file system."; + break; + +#ifdef EDQUOT + case EDQUOT: + errmsg = "The file \"%s\" could not be created because you are too close to, or over, your disk quota."; + break; +#endif + + case EINVAL: + errmsg = "The file \"%s\" could not be created because an invalid filename was specified."; + break; + +#ifdef ENAMETOOLONG + case ENAMETOOLONG: + /* XXX Make sure we truncate on a character boundary. */ + errmsg = "The file name \"%.80s" UTF8_HORIZONTAL_ELLIPSIS "\" is too long."; + break; +#endif + + case ENOMEM: + /* + * The problem probably has nothing to do with how much RAM the + * user has on their machine, so don't confuse them by saying + * "memory". The problem is probably either virtual address + * space or swap space. + */ +#if GLIB_SIZEOF_VOID_P == 4 + /* + * ILP32; we probably ran out of virtual address space. + */ +#define ENOMEM_REASON "it can't be handled by a 32-bit application" +#else + /* + * LP64 or LLP64; we probably ran out of swap space. + */ +#if defined(_WIN32) + /* + * You need to make the pagefile bigger. + */ +#define ENOMEM_REASON "the pagefile is too small" +#elif defined(ENABLE_APPLICATION_BUNDLE) + /* + * dynamic_pager couldn't, or wouldn't, create more swap files. + */ +#define ENOMEM_REASON "your system ran out of swap file space" +#else + /* + * Either you have a fixed swap partition or a fixed swap file, + * and it needs to be made bigger. + * + * This is UN*X, but it's not macOS, so we assume the user is + * *somewhat* nerdy. + */ +#define ENOMEM_REASON "your system is out of swap space" +#endif +#endif /* GLIB_SIZEOF_VOID_P == 4 */ + if (for_writing) + errmsg = "The file \"%s\" could not be created because " ENOMEM_REASON "."; + else + errmsg = "The file \"%s\" could not be opened because " ENOMEM_REASON "."; + break; + + default: + snprintf(errmsg_errno, sizeof(errmsg_errno), + "The file \"%%s\" could not be %s: %s.", + for_writing ? "created" : "opened", + g_strerror(err)); + errmsg = errmsg_errno; + break; + } + return errmsg; +} + +/* + * Return an error message for UNIX-style errno indications on write + * operations. + */ +const char * +file_write_error_message(int err) +{ + const char *errmsg; + static char errmsg_errno[1024+1]; + + switch (err) { + + case ENOSPC: + errmsg = "The file \"%s\" could not be saved because there is no space left on the file system."; + break; + +#ifdef EDQUOT + case EDQUOT: + errmsg = "The file \"%s\" could not be saved because you are too close to, or over, your disk quota."; + break; +#endif + + default: + snprintf(errmsg_errno, sizeof(errmsg_errno), + "An error occurred while writing to the file \"%%s\": %s.", + g_strerror(err)); + errmsg = errmsg_errno; + break; + } + return errmsg; +} + + +bool +file_exists(const char *fname) +{ + ws_statb64 file_stat; + + if (!fname) { + return false; + } + + if (ws_stat64(fname, &file_stat) != 0 && errno == ENOENT) { + return false; + } else { + return true; + } +} + +bool config_file_exists_with_entries(const char *fname, char comment_char) +{ + bool start_of_line = true; + bool has_entries = false; + FILE *file; + int c; + + if (!fname) { + return false; + } + + if ((file = ws_fopen(fname, "r")) == NULL) { + return false; + } + + do { + c = ws_getc_unlocked(file); + if (start_of_line && c != comment_char && !g_ascii_isspace(c) && g_ascii_isprint(c)) { + has_entries = true; + break; + } + if (c == '\n' || !g_ascii_isspace(c)) { + start_of_line = (c == '\n'); + } + } while (c != EOF); + + fclose(file); + return has_entries; +} + +/* + * Check that the from file is not the same as to file + * We do it here so we catch all cases ... + * Unfortunately, the file requester gives us an absolute file + * name and the read file name may be relative (if supplied on + * the command line), so we can't just compare paths. From Joerg Mayer. + */ +bool +files_identical(const char *fname1, const char *fname2) +{ + /* Two different implementations, because: + * + * - _fullpath is not available on UN*X, so we can't get full + * paths and compare them (which wouldn't work with hard links + * in any case); + * + * - st_ino isn't filled in with a meaningful value on Windows. + */ +#ifdef _WIN32 + char full1[MAX_PATH], full2[MAX_PATH]; + + /* + * Get the absolute full paths of the file and compare them. + * That won't work if you have hard links, but those aren't + * much used on Windows, even though NTFS supports them. + * + * XXX - will _fullpath work with UNC? + */ + if( _fullpath( full1, fname1, MAX_PATH ) == NULL ) { + return false; + } + + if( _fullpath( full2, fname2, MAX_PATH ) == NULL ) { + return false; + } + + if(strcmp(full1, full2) == 0) { + return true; + } else { + return false; + } +#else + ws_statb64 filestat1, filestat2; + + /* + * Compare st_dev and st_ino. + */ + if (ws_stat64(fname1, &filestat1) == -1) + return false; /* can't get info about the first file */ + if (ws_stat64(fname2, &filestat2) == -1) + return false; /* can't get info about the second file */ + return (filestat1.st_dev == filestat2.st_dev && + filestat1.st_ino == filestat2.st_ino); +#endif +} + +bool +file_needs_reopen(int fd, const char* filename) +{ +#ifdef _WIN32 + /* Windows handles st_dev in a way unsuitable here: + * * _fstat() simply casts the file descriptor (ws_fileno(fp)) to unsigned + * and assigns this value to st_dev and st_rdev + * * _wstat() converts drive letter (eg. C) to number (A=0, B=1, C=2, ...) + * and assigns such number to st_dev and st_rdev + * + * The st_ino parameter is simply zero as there is no specific assignment + * to it in the Universal CRT source code. + * + * Thus instead of using fstat(), use Windows specific API. + */ + + HANDLE open_handle = (HANDLE)_get_osfhandle(fd); + HANDLE current_handle = CreateFile(utf_8to16(filename), FILE_READ_ATTRIBUTES, + FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL, OPEN_EXISTING, 0, NULL); + BY_HANDLE_FILE_INFORMATION open_info, current_info; + + if (current_handle == INVALID_HANDLE_VALUE) { + return true; + } + +#if (_WIN32_WINNT >= _WIN32_WINNT_WIN8) + FILE_ID_INFO open_id, current_id; + if (GetFileInformationByHandleEx(open_handle, FileIdInfo, &open_id, sizeof(open_id)) && + GetFileInformationByHandleEx(current_handle, FileIdInfo, ¤t_id, sizeof(current_id))) { + /* 128-bit identifier is available, use it */ + CloseHandle(current_handle); + return open_id.VolumeSerialNumber != current_id.VolumeSerialNumber || + memcmp(&open_id.FileId, ¤t_id.FileId, sizeof(open_id.FileId)) != 0; + } +#endif /* _WIN32_WINNT >= _WIN32_WINNT_WIN8 */ + if (GetFileInformationByHandle(open_handle, &open_info) && + GetFileInformationByHandle(current_handle, ¤t_info)) { + /* Fallback to 64-bit identifier */ + CloseHandle(current_handle); + uint64_t open_size = (((uint64_t)open_info.nFileSizeHigh) << 32) | open_info.nFileSizeLow; + uint64_t current_size = (((uint64_t)current_info.nFileSizeHigh) << 32) | current_info.nFileSizeLow; + return open_info.dwVolumeSerialNumber != current_info.dwVolumeSerialNumber || + open_info.nFileIndexHigh != current_info.nFileIndexHigh || + open_info.nFileIndexLow != current_info.nFileIndexLow || + open_size > current_size; + } + CloseHandle(current_handle); + return true; +#else + ws_statb64 open_stat, current_stat; + + /* consider a file deleted when stat fails for either file, + * or when the residing device / inode has changed. */ + if (0 != ws_fstat64(fd, &open_stat)) + return true; + if (0 != ws_stat64(filename, ¤t_stat)) + return true; + + return open_stat.st_dev != current_stat.st_dev || + open_stat.st_ino != current_stat.st_ino || + open_stat.st_size > current_stat.st_size; +#endif +} + +bool +write_file_binary_mode(const char *filename, const void *content, size_t content_len) +{ + int fd; + size_t bytes_left; + unsigned int bytes_to_write; + ssize_t bytes_written; + const uint8_t *ptr; + int err; + + fd = ws_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644); + if (fd == -1) { + report_open_failure(filename, errno, true); + return false; + } + + /* + * The third argument to _write() on Windows is an unsigned int, + * so, on Windows, that's the size of the third argument to + * ws_write(). + * + * The third argument to write() on UN*X is a size_t, although + * the return value is an ssize_t, so one probably shouldn't + * write more than the max value of an ssize_t. + * + * In either case, there's no guarantee that a size_t such as + * content_len can be passed to ws_write(), so we write in + * chunks of at most 2^31 bytes. + */ + + ptr = (const uint8_t *)content; + bytes_left = content_len; + while (bytes_left != 0) { + if (bytes_left > 0x40000000) { + bytes_to_write = 0x40000000; + } else { + bytes_to_write = (unsigned int)bytes_left; + } + bytes_written = ws_write(fd, ptr, bytes_to_write); + if (bytes_written <= 0) { + if (bytes_written < 0) { + err = errno; + } else { + err = WTAP_ERR_SHORT_WRITE; + } + report_write_failure(filename, err); + ws_close(fd); + return false; + } + bytes_left -= bytes_written; + ptr += bytes_written; + } + + ws_close(fd); + return true; +} + +/* + * Copy a file in binary mode, for those operating systems that care about + * such things. This should be OK for all files, even text files, as + * we'll copy the raw bytes, and we don't look at the bytes as we copy + * them. + * + * Returns true on success, false on failure. If a failure, it also + * displays a simple dialog window with the error message. + */ +bool +copy_file_binary_mode(const char *from_filename, const char *to_filename) +{ + int from_fd, to_fd, err; + ws_file_ssize_t nread, nwritten; + uint8_t *pd = NULL; + + /* Copy the raw bytes of the file. */ + from_fd = ws_open(from_filename, O_RDONLY | O_BINARY, 0000 /* no creation so don't matter */); + if (from_fd < 0) { + report_open_failure(from_filename, errno, false); + goto done; + } + + /* Use open() instead of creat() so that we can pass the O_BINARY + flag, which is relevant on Win32; it appears that "creat()" + may open the file in text mode, not binary mode, but we want + to copy the raw bytes of the file, so we need the output file + to be open in binary mode. */ + to_fd = ws_open(to_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644); + if (to_fd < 0) { + report_open_failure(to_filename, errno, true); + ws_close(from_fd); + goto done; + } + +#define FS_READ_SIZE 65536 + pd = (uint8_t *)g_malloc(FS_READ_SIZE); + while ((nread = ws_read(from_fd, pd, FS_READ_SIZE)) > 0) { + nwritten = ws_write(to_fd, pd, nread); + if (nwritten < nread) { + if (nwritten < 0) + err = errno; + else + err = WTAP_ERR_SHORT_WRITE; + report_write_failure(to_filename, err); + ws_close(from_fd); + ws_close(to_fd); + goto done; + } + } + if (nread < 0) { + err = errno; + report_read_failure(from_filename, err); + ws_close(from_fd); + ws_close(to_fd); + goto done; + } + ws_close(from_fd); + if (ws_close(to_fd) < 0) { + report_write_failure(to_filename, errno); + goto done; + } + + g_free(pd); + pd = NULL; + return true; + +done: + g_free(pd); + return false; +} + +char * +data_file_url(const char *filename) +{ + char *file_path; + char *uri; + + /* Absolute path? */ + if(g_path_is_absolute(filename)) { + file_path = g_strdup(filename); + } else { + file_path = ws_strdup_printf("%s/%s", get_datafile_dir(), filename); + } + + /* XXX - check, if the file is really existing, otherwise display a simple_dialog about the problem */ + + /* convert filename to uri */ + uri = g_filename_to_uri(file_path, NULL, NULL); + g_free(file_path); + return uri; +} + +char * +doc_file_url(const char *filename) +{ + char *file_path; + char *uri; + + /* Absolute path? */ + if(g_path_is_absolute(filename)) { + file_path = g_strdup(filename); + } else { + file_path = ws_strdup_printf("%s/%s", get_doc_dir(), filename); + } + + /* XXX - check, if the file is really existing, otherwise display a simple_dialog about the problem */ + + /* convert filename to uri */ + uri = g_filename_to_uri(file_path, NULL, NULL); + g_free(file_path); + return uri; +} + +void +free_progdirs(void) +{ + g_free(persconffile_dir); + persconffile_dir = NULL; + g_free(datafile_dir); + datafile_dir = NULL; + g_free(persdatafile_dir); + persdatafile_dir = NULL; + g_free(persconfprofile); + persconfprofile = NULL; + g_free(progfile_dir); + progfile_dir = NULL; + g_free(doc_dir); + doc_dir = NULL; + g_free(install_prefix); + install_prefix = NULL; +#if defined(HAVE_PLUGINS) || defined(HAVE_LUA) + g_free(plugin_dir); + plugin_dir = NULL; + g_free(plugin_dir_with_version); + plugin_dir_with_version = NULL; + g_free(plugin_pers_dir); + plugin_pers_dir = NULL; + g_free(plugin_pers_dir_with_version); + plugin_pers_dir_with_version = NULL; +#endif + g_free(extcap_dir); + extcap_dir = NULL; + g_free(extcap_pers_dir); + extcap_pers_dir = NULL; +} + +/* + * Editor modelines + * + * Local Variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * ex: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ |