diff options
Diffstat (limited to '')
| -rw-r--r-- | nsprpub/config/nsinstall.c | 560 |
1 files changed, 560 insertions, 0 deletions
diff --git a/nsprpub/config/nsinstall.c b/nsprpub/config/nsinstall.c new file mode 100644 index 0000000000..ee6a111552 --- /dev/null +++ b/nsprpub/config/nsinstall.c @@ -0,0 +1,560 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* 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. +** +** Brendan Eich, 7/20/95 +*/ +#include <stdio.h> /* OSF/1 requires this before grp.h, so put it first */ +#include <assert.h> +#include <fcntl.h> +#include <grp.h> +#include <pwd.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <utime.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <dirent.h> +#include <errno.h> +#include <stdarg.h> +#ifdef USE_REENTRANT_LIBC +#include "libc_r.h" +#endif /* USE_REENTRANT_LIBC */ + +#include "pathsub.h" + +#define HAVE_FCHMOD + + +/* + * Does getcwd() take NULL as the first argument and malloc + * the result buffer? + */ +#if !defined(DARWIN) +#define GETCWD_CAN_MALLOC +#endif + +#if defined(LINUX) || defined(__GNU__) || defined(__GLIBC__) +#include <getopt.h> +#endif + +#if defined(SCO) || defined(UNIXWARE) +#if !defined(S_ISLNK) && defined(S_IFLNK) +#define S_ISLNK(a) (((a) & S_IFMT) == S_IFLNK) +#endif +#endif + +#ifdef QNX +#define d_ino d_stat.st_ino +#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); +} + +static int +mkdirs(char *path, mode_t mode) +{ + char *cp; + struct stat sb; + int res; + + 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 = '/'; + } + res = mkdir(path, mode); + if ((res != 0) && (errno == EEXIST)) { + return 0; + } + else { + return res; + } +} + +static uid_t +touid(char *owner) +{ + struct passwd *pw; + uid_t uid; + char *cp; + + 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; + + 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; +} + +int +main(int argc, char **argv) +{ + int onlydir, dodir, dolink, dorelsymlink, dotimes, opt, len, lplen, tdlen, bnlen, exists, fromfd, tofd, cc, wc; + mode_t mode = 0755; + char *linkprefix, *owner, *group, *cp, *cwd, *todir, *toname, *name, *base, *linkname, *bp, buf[BUFSIZ]; + uid_t uid; + gid_t gid; + struct stat sb, tosb; + struct utimbuf utb; + + program = argv[0]; + cwd = linkname = linkprefix = owner = group = 0; + onlydir = dodir = dolink = dorelsymlink = dotimes = lplen = 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 make directory %s", todir); + } + if (onlydir) { + return 0; + } + + if (!cwd) { +#ifdef GETCWD_CAN_MALLOC + cwd = getcwd(0, PATH_MAX); +#else + cwd = malloc(PATH_MAX + 1); + cwd = getcwd(cwd, PATH_MAX); +#endif + } + xchdir(todir); +#ifdef GETCWD_CAN_MALLOC + todir = getcwd(0, PATH_MAX); +#else + todir = malloc(PATH_MAX + 1); + todir = getcwd(todir, PATH_MAX); +#endif + xchdir(cwd); + tdlen = strlen(todir); + + 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); + exists = (lstat(toname, &tosb) == 0); + + if (dodir) { + /* -d means create a directory, always */ + if (exists && !S_ISDIR(tosb.st_mode)) { + (void) unlink(toname); + exists = 0; + } + if (!exists && mkdir(toname, mode) < 0) { + 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)) { + (void) (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname); + exists = 0; + } + if (!exists && symlink(name, toname) < 0) { + 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)) { + (void) (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(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("cannot write to %s", toname); + } + close(fromfd); + } + + free(toname); + } + + free(cwd); + free(todir); + return 0; +} + +/* +** Pathname subroutines. +** +** Brendan Eich, 8/29/95 +*/ + +char *program; + +void +fail(char *format, ...) +{ + int error; + va_list ap; + +#ifdef USE_REENTRANT_LIBC + R_STRERROR_INIT_R(); +#endif + + error = errno; + fprintf(stderr, "%s: ", program); + va_start(ap, format); + vfprintf(stderr, format, ap); + va_end(ap); + if (error) + +#ifdef USE_REENTRANT_LIBC + R_STRERROR_R(errno); + fprintf(stderr, ": %s", r_strerror_r); +#else + fprintf(stderr, ": %s", strerror(errno)); +#endif + + putc('\n', stderr); + exit(1); +} + +char * +getcomponent(char *path, char *name) +{ + if (*path == '\0') { + return 0; + } + if (*path == '/') { + *name++ = '/'; + } else { + do { + *name++ = *path++; + } while (*path != '/' && *path != '\0'); + } + *name = '\0'; + while (*path == '/') { + path++; + } + return path; +} + +#ifdef UNIXWARE_READDIR_BUFFER_TOO_SMALL +/* Sigh. The static buffer in Unixware's readdir is too small. */ +struct dirent * readdir(DIR *d) +{ + static struct dirent *buf = NULL; +#define MAX_PATH_LEN 1024 + + + if(buf == NULL) + buf = (struct dirent *) malloc(sizeof(struct dirent) + MAX_PATH_LEN) + ; + return(readdir_r(d, buf)); +} +#endif + +char * +ino2name(ino_t ino, char *dir) +{ + DIR *dp; + struct dirent *ep; + char *name; + + dp = opendir(".."); + if (!dp) { + fail("cannot read parent directory"); + } + for (;;) { + if (!(ep = readdir(dp))) { + fail("cannot find current directory"); + } + if (ep->d_ino == ino) { + break; + } + } + name = xstrdup(ep->d_name); + closedir(dp); + return name; +} + +void * +xmalloc(size_t size) +{ + void *p = malloc(size); + if (!p) { + fail("cannot allocate %u bytes", size); + } + return p; +} + +char * +xstrdup(char *s) +{ + return strcpy((char*)xmalloc(strlen(s) + 1), s); +} + +char * +xbasename(char *path) +{ + char *cp; + + while ((cp = strrchr(path, '/')) && cp[1] == '\0') { + *cp = '\0'; + } + if (!cp) { + return path; + } + return cp + 1; +} + +void +xchdir(char *dir) +{ + if (chdir(dir) < 0) { + fail("cannot change directory to %s", dir); + } +} + +int +relatepaths(char *from, char *to, char *outpath) +{ + char *cp, *cp2; + int len; + char buf[NAME_MAX]; + + assert(*from == '/' && *to == '/'); + for (cp = to, cp2 = from; *cp == *cp2; cp++, cp2++) + if (*cp == '\0') { + break; + } + while (cp[-1] != '/') { + cp--, cp2--; + } + if (cp - 1 == to) { + /* closest common ancestor is /, so use full pathname */ + len = strlen(strcpy(outpath, to)); + if (outpath[len] != '/') { + outpath[len++] = '/'; + outpath[len] = '\0'; + } + } else { + len = 0; + while ((cp2 = getcomponent(cp2, buf)) != 0) { + strcpy(outpath + len, "../"); + len += 3; + } + while ((cp = getcomponent(cp, buf)) != 0) { + sprintf(outpath + len, "%s/", buf); + len += strlen(outpath + len); + } + } + return len; +} + +void +reversepath(char *inpath, char *name, int len, char *outpath) +{ + char *cp, *cp2; + char buf[NAME_MAX]; + struct stat sb; + + cp = strcpy(outpath + PATH_MAX - (len + 1), name); + cp2 = inpath; + while ((cp2 = getcomponent(cp2, buf)) != 0) { + if (strcmp(buf, ".") == 0) { + continue; + } + if (strcmp(buf, "..") == 0) { + if (stat(".", &sb) < 0) { + fail("cannot stat current directory"); + } + name = ino2name(sb.st_ino, ".."); + len = strlen(name); + cp -= len + 1; + strcpy(cp, name); + cp[len] = '/'; + free(name); + xchdir(".."); + } else { + cp -= 3; + memcpy(cp, "../", 3); + xchdir(buf); + } + } + strcpy(outpath, cp); +} |