diff options
Diffstat (limited to 'security/nss/coreconf/nsinstall/nsinstall.c')
| -rw-r--r-- | security/nss/coreconf/nsinstall/nsinstall.c | 407 |
1 files changed, 407 insertions, 0 deletions
diff --git a/security/nss/coreconf/nsinstall/nsinstall.c b/security/nss/coreconf/nsinstall/nsinstall.c new file mode 100644 index 0000000000..3df0ae6b02 --- /dev/null +++ b/security/nss/coreconf/nsinstall/nsinstall.c @@ -0,0 +1,407 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* +** Netscape portable install command. +*/ +#include <stdio.h> /* OSF/1 requires this before grp.h, so put it first */ +#include <assert.h> +#include <fcntl.h> +#include <string.h> +#if defined(_WINDOWS) +#include <windows.h> +typedef unsigned int mode_t; +#else +#include <grp.h> +#include <pwd.h> +#include <errno.h> +#include <stdlib.h> +#include <unistd.h> +#include <utime.h> +#endif +#include <sys/types.h> +#include <sys/stat.h> +#include "pathsub.h" + +#define HAVE_LCHOWN + +#if defined(AIX) || defined(BSDI) || defined(HPUX) || defined(LINUX) || defined(SUNOS4) || defined(SCO) || defined(UNIXWARE) || defined(NTO) || defined(DARWIN) || defined(BEOS) || defined(__riscos__) +#undef HAVE_LCHOWN +#endif + +#define HAVE_FCHMOD + +#if defined(BEOS) +#undef HAVE_FCHMOD +#endif + +#ifdef LINUX +#include <getopt.h> +#endif + +#if defined(SCO) || defined(UNIXWARE) || defined(SNI) || defined(NCR) || defined(NEC) +#if !defined(S_ISLNK) && defined(S_IFLNK) +#define S_ISLNK(a) (((a) & S_IFMT) == S_IFLNK) +#endif +#endif + +#if defined(SNI) +extern int fchmod(int fildes, mode_t mode); +#endif + + +#ifdef GETCWD_CANT_MALLOC +/* + * this should probably go into a utility library in case other applications + * need it. + */ +static char * +getcwd_do_malloc(char *path, int len) { + + if (!path) { + path = malloc(PATH_MAX +1); + if (!path) return NULL; + } + return getcwd(path, PATH_MAX); +} +#define GETCWD getcwd_do_malloc +#else +#define GETCWD getcwd +#endif + + +static void +usage(void) +{ + fprintf(stderr, + "usage: %s [-C cwd] [-L linkprefix] [-m mode] [-o owner] [-g group]\n" + " %*s [-DdltR] file [file ...] directory\n", + program, (int)strlen(program), ""); + exit(2); +} + +/* this is more-or-less equivalent to mkdir -p */ +static int +mkdirs(char *path, mode_t mode) +{ + char * cp; + int rv; + struct stat sb; + + if (!path || !path[0]) + fail("Null pointer or empty string passed to mkdirs()"); + while (*path == '/' && path[1] == '/') + path++; + for (cp = strrchr(path, '/'); cp && cp != path && *(cp - 1) == '/'; cp--); + if (cp && cp != path) { + *cp = '\0'; + if ((stat(path, &sb) < 0 || !S_ISDIR(sb.st_mode)) && + mkdirs(path, mode) < 0) { + return -1; + } + *cp = '/'; + } + rv = mkdir(path, mode); + if (rv) { + if (errno != EEXIST) + fail("mkdirs cannot make %s", path); + fprintf(stderr, "directory creation race: %s\n", path); + if (!stat(path, &sb) && S_ISDIR(sb.st_mode)) + rv = 0; + } + return rv; +} + +static uid_t +touid(char *owner) +{ + struct passwd *pw; + uid_t uid; + char *cp; + + if (!owner || !owner[0]) + fail("Null pointer or empty string passed to touid()"); + pw = getpwnam(owner); + if (pw) + return pw->pw_uid; + uid = strtol(owner, &cp, 0); + if (uid == 0 && cp == owner) + fail("cannot find uid for %s", owner); + return uid; +} + +static gid_t +togid(char *group) +{ + struct group *gr; + gid_t gid; + char *cp; + + if (!group || !group[0]) + fail("Null pointer or empty string passed to togid()"); + gr = getgrnam(group); + if (gr) + return gr->gr_gid; + gid = strtol(group, &cp, 0); + if (gid == 0 && cp == group) + fail("cannot find gid for %s", group); + return gid; +} + +void * const uninit = (void *)0xdeadbeef; + +int +main(int argc, char **argv) +{ + char * base = uninit; + char * bp = uninit; + char * cp = uninit; + char * cwd = 0; + char * group = 0; + char * linkname = 0; + char * linkprefix = 0; + char * name = uninit; + char * owner = 0; + char * todir = uninit; + char * toname = uninit; + + int bnlen = -1; + int cc = 0; + int dodir = 0; + int dolink = 0; + int dorelsymlink = 0; + int dotimes = 0; + int exists = 0; + int fromfd = -1; + int len = -1; + int lplen = 0; + int onlydir = 0; + int opt = -1; + int tdlen = -1; + int tofd = -1; + int wc = -1; + + mode_t mode = 0755; + + uid_t uid = -1; + gid_t gid = -1; + + struct stat sb; + struct stat tosb; + struct utimbuf utb; + char buf[BUFSIZ]; + + program = strrchr(argv[0], '/'); + if (!program) + program = strrchr(argv[0], '\\'); + program = program ? program+1 : argv[0]; + + + while ((opt = getopt(argc, argv, "C:DdlL:Rm:o:g:t")) != EOF) { + switch (opt) { + case 'C': cwd = optarg; break; + case 'D': onlydir = 1; break; + case 'd': dodir = 1; break; + case 'l': dolink = 1; break; + case 'L': + linkprefix = optarg; + lplen = strlen(linkprefix); + dolink = 1; + break; + case 'R': dolink = dorelsymlink = 1; break; + case 'm': + mode = strtoul(optarg, &cp, 8); + if (mode == 0 && cp == optarg) + usage(); + break; + case 'o': owner = optarg; break; + case 'g': group = optarg; break; + case 't': dotimes = 1; break; + default: usage(); + } + } + + argc -= optind; + argv += optind; + if (argc < 2 - onlydir) + usage(); + + todir = argv[argc-1]; + if ((stat(todir, &sb) < 0 || !S_ISDIR(sb.st_mode)) && + mkdirs(todir, 0777) < 0) { + fail("cannot mkdir -p %s", todir); + } + if (onlydir) + return 0; + + if (!cwd) { + cwd = GETCWD(0, PATH_MAX); + if (!cwd) + fail("could not get CWD"); + } + + /* make sure we can get into todir. */ + xchdir(todir); + todir = GETCWD(0, PATH_MAX); + if (!todir) + fail("could not get CWD in todir"); + tdlen = strlen(todir); + + /* back to original directory. */ + xchdir(cwd); + + uid = owner ? touid(owner) : -1; + gid = group ? togid(group) : -1; + + while (--argc > 0) { + name = *argv++; + len = strlen(name); + base = xbasename(name); + bnlen = strlen(base); + toname = (char*)xmalloc(tdlen + 1 + bnlen + 1); + sprintf(toname, "%s/%s", todir, base); +retry: + exists = (lstat(toname, &tosb) == 0); + + if (dodir) { + /* -d means create a directory, always */ + if (exists && !S_ISDIR(tosb.st_mode)) { + int rv = unlink(toname); + if (rv) + fail("cannot unlink %s", toname); + exists = 0; + } + if (!exists && mkdir(toname, mode) < 0) { + /* we probably have two nsinstall programs in a race here. */ + if (errno == EEXIST && !stat(toname, &sb) && + S_ISDIR(sb.st_mode)) { + fprintf(stderr, "directory creation race: %s\n", toname); + goto retry; + } + fail("cannot make directory %s", toname); + } + if ((owner || group) && chown(toname, uid, gid) < 0) + fail("cannot change owner of %s", toname); + } else if (dolink) { + if (*name == '/') { + /* source is absolute pathname, link to it directly */ + linkname = 0; + } else { + if (linkprefix) { + /* -L implies -l and prefixes names with a $cwd arg. */ + len += lplen + 1; + linkname = (char*)xmalloc(len + 1); + sprintf(linkname, "%s/%s", linkprefix, name); + } else if (dorelsymlink) { + /* Symlink the relative path from todir to source name. */ + linkname = (char*)xmalloc(PATH_MAX); + + if (*todir == '/') { + /* todir is absolute: skip over common prefix. */ + lplen = relatepaths(todir, cwd, linkname); + strcpy(linkname + lplen, name); + } else { + /* todir is named by a relative path: reverse it. */ + reversepath(todir, name, len, linkname); + xchdir(cwd); + } + + len = strlen(linkname); + } + name = linkname; + } + + /* Check for a pre-existing symlink with identical content. */ + if (exists && + (!S_ISLNK(tosb.st_mode) || + readlink(toname, buf, sizeof buf) != len || + strncmp(buf, name, len) != 0)) { + int rmrv; + rmrv = (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname); + if (rmrv < 0) { + fail("destination exists, cannot remove %s", toname); + } + exists = 0; + } + if (!exists && symlink(name, toname) < 0) { + if (errno == EEXIST) { + fprintf(stderr, "symlink creation race: %s\n", toname); + fail("symlink was attempted in working directory %s " + "from %s to %s.\n", cwd, name, toname); + goto retry; + } + diagnosePath(toname); + fail("cannot make symbolic link %s", toname); + } +#ifdef HAVE_LCHOWN + if ((owner || group) && lchown(toname, uid, gid) < 0) + fail("cannot change owner of %s", toname); +#endif + + if (linkname) { + free(linkname); + linkname = 0; + } + } else { + /* Copy from name to toname, which might be the same file. */ + fromfd = open(name, O_RDONLY); + if (fromfd < 0 || fstat(fromfd, &sb) < 0) + fail("cannot access %s", name); + if (exists && + (!S_ISREG(tosb.st_mode) || access(toname, W_OK) < 0)) { + int rmrv; + rmrv = (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname); + if (rmrv < 0) { + fail("destination exists, cannot remove %s", toname); + } + } + tofd = open(toname, O_CREAT | O_WRONLY, 0666); + if (tofd < 0) + fail("cannot create %s", toname); + + bp = buf; + while ((cc = read(fromfd, bp, sizeof buf)) > 0) { + while ((wc = write(tofd, bp, cc)) > 0) { + if ((cc -= wc) == 0) + break; + bp += wc; + } + if (wc < 0) + fail("cannot write to %s", toname); + } + if (cc < 0) + fail("cannot read from %s", name); + + if (ftruncate(tofd, sb.st_size) < 0) + fail("cannot truncate %s", toname); + if (dotimes) { + utb.actime = sb.st_atime; + utb.modtime = sb.st_mtime; + if (utime(toname, &utb) < 0) + fail("cannot set times of %s", toname); + } +#ifdef HAVE_FCHMOD + if (fchmod(tofd, mode) < 0) +#else + if (chmod(toname, mode) < 0) +#endif + fail("cannot change mode of %s", toname); + + if ((owner || group) && fchown(tofd, uid, gid) < 0) + fail("cannot change owner of %s", toname); + + /* Must check for delayed (NFS) write errors on close. */ + if (close(tofd) < 0) + fail("close reports write error on %s", toname); + close(fromfd); + } + + free(toname); + } + + free(cwd); + free(todir); + return 0; +} + |