| File: | var/lib/jenkins/workspace/firefox-scan-build/config/nsinstall.c |
| Warning: | line 316, column 3 Value stored to 'tdlen' is never read |
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| 1 | /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| 5 | /* |
| 6 | ** Netscape portable install command. |
| 7 | ** |
| 8 | ** Brendan Eich, 7/20/95 |
| 9 | */ |
| 10 | #include <stdio.h> /* OSF/1 requires this before grp.h, so put it first */ |
| 11 | #include <assert.h> |
| 12 | #include <fcntl.h> |
| 13 | #include <errno(*__errno_location ()).h> |
| 14 | #include <dirent.h> |
| 15 | #include <limits.h> |
| 16 | #include <grp.h> |
| 17 | #include <pwd.h> |
| 18 | #include <stdio.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <string.h> |
| 21 | #include <unistd.h> |
| 22 | #include <utime.h> |
| 23 | #include <sys/types.h> |
| 24 | #include <sys/stat.h> |
| 25 | #include "pathsub.h" |
| 26 | |
| 27 | #ifdef HAVE_GETOPT_H |
| 28 | # include <getopt.h> |
| 29 | #endif |
| 30 | |
| 31 | #ifdef SUNOS4 |
| 32 | # include "sunos4.h" |
| 33 | #endif |
| 34 | |
| 35 | #ifdef NEXTSTEP |
| 36 | # include <bsd/libc.h> |
| 37 | #endif |
| 38 | |
| 39 | #ifdef __QNX__ |
| 40 | # include <unix1.h> |
| 41 | #endif |
| 42 | |
| 43 | #ifdef NEED_S_ISLNK |
| 44 | # if !defined(S_ISLNK) && defined(S_IFLNK0120000) |
| 45 | # define S_ISLNK(a)((((a)) & 0170000) == (0120000)) (((a) & S_IFMT0170000) == S_IFLNK0120000) |
| 46 | # endif |
| 47 | #endif |
| 48 | |
| 49 | #ifndef _DIRECTORY_SEPARATOR"/" |
| 50 | # define _DIRECTORY_SEPARATOR"/" "/" |
| 51 | #endif /* _DIRECTORY_SEPARATOR */ |
| 52 | |
| 53 | #ifdef NEED_FCHMOD_PROTO |
| 54 | extern int fchmod(int fildes, mode_t mode); |
| 55 | #endif |
| 56 | |
| 57 | static void usage(void) { |
| 58 | fprintf(stderrstderr, |
| 59 | "usage: %s [-C cwd] [-L linkprefix] [-m mode] [-o owner] [-g group]\n" |
| 60 | " %*s [-DdltR] file [file ...] directory\n", |
| 61 | program, (int)strlen(program), ""); |
| 62 | exit(2); |
| 63 | } |
| 64 | |
| 65 | static int mkdirs(char* path, mode_t mode) { |
| 66 | char* cp; |
| 67 | struct stat sb; |
| 68 | int res; |
| 69 | int l; |
| 70 | |
| 71 | /* strip trailing "/." */ |
| 72 | l = strlen(path); |
| 73 | if (l > 1 && path[l - 1] == '.' && path[l - 2] == '/') path[l - 2] = 0; |
| 74 | |
| 75 | while (*path == '/' && path[1] == '/') path++; |
| 76 | for (cp = strrchr(path, '/'); cp && cp != path && *(cp - 1) == '/'; cp--); |
| 77 | if (cp && cp != path) { |
| 78 | *cp = '\0'; |
| 79 | if ((lstat(path, &sb) < 0 || !S_ISDIR(sb.st_mode)((((sb.st_mode)) & 0170000) == (0040000))) && |
| 80 | mkdirs(path, mode) < 0) { |
| 81 | return -1; |
| 82 | } |
| 83 | *cp = '/'; |
| 84 | } |
| 85 | |
| 86 | res = mkdir(path, mode); |
| 87 | if ((res != 0) && (errno(*__errno_location ()) == EEXIST17)) |
| 88 | return 0; |
| 89 | else |
| 90 | return res; |
| 91 | } |
| 92 | |
| 93 | static uid_t touid(char* owner) { |
| 94 | struct passwd* pw; |
| 95 | uid_t uid; |
| 96 | char* cp; |
| 97 | |
| 98 | pw = getpwnam(owner); |
| 99 | if (pw) return pw->pw_uid; |
| 100 | uid = strtol(owner, &cp, 0); |
| 101 | if (uid == 0 && cp == owner) fail("cannot find uid for %s", owner); |
| 102 | return uid; |
| 103 | } |
| 104 | |
| 105 | static gid_t togid(char* group) { |
| 106 | struct group* gr; |
| 107 | gid_t gid; |
| 108 | char* cp; |
| 109 | |
| 110 | gr = getgrnam(group); |
| 111 | if (gr) return gr->gr_gid; |
| 112 | gid = strtol(group, &cp, 0); |
| 113 | if (gid == 0 && cp == group) fail("cannot find gid for %s", group); |
| 114 | return gid; |
| 115 | } |
| 116 | |
| 117 | static void copyfile(char* name, char* toname, mode_t mode, char* group, |
| 118 | char* owner, int dotimes, uid_t uid, gid_t gid) { |
| 119 | int fromfd, tofd = -1, cc, wc, exists; |
| 120 | char buf[BUFSIZ8192], *bp; |
| 121 | struct stat sb, tosb; |
| 122 | struct utimbuf utb; |
| 123 | |
| 124 | exists = (lstat(toname, &tosb) == 0); |
| 125 | |
| 126 | fromfd = open(name, O_RDONLY00); |
| 127 | if (fromfd < 0 || fstat(fromfd, &sb) < 0) fail("cannot access %s", name); |
| 128 | if (exists) { |
| 129 | if (S_ISREG(tosb.st_mode)((((tosb.st_mode)) & 0170000) == (0100000))) { |
| 130 | /* See if we can open it. This is more reliable than 'access'. */ |
| 131 | tofd = open(toname, O_CREAT0100 | O_WRONLY01, 0666); |
| 132 | } |
| 133 | if (tofd < 0) { |
| 134 | (void)(S_ISDIR(tosb.st_mode)((((tosb.st_mode)) & 0170000) == (0040000)) ? rmdir : unlink)(toname); |
| 135 | } |
| 136 | } |
| 137 | if (tofd < 0) { |
| 138 | tofd = open(toname, O_CREAT0100 | O_WRONLY01, 0666); |
| 139 | if (tofd < 0) fail("cannot create %s", toname); |
| 140 | } |
| 141 | |
| 142 | bp = buf; |
| 143 | while ((cc = read(fromfd, bp, sizeof buf)) > 0) { |
| 144 | while ((wc = write(tofd, bp, (unsigned int)cc)) > 0) { |
| 145 | if ((cc -= wc) == 0) break; |
| 146 | bp += wc; |
| 147 | } |
| 148 | if (wc < 0) fail("cannot write to %s", toname); |
| 149 | } |
| 150 | if (cc < 0) fail("cannot read from %s", name); |
| 151 | |
| 152 | if (ftruncate(tofd, sb.st_size) < 0) fail("cannot truncate %s", toname); |
| 153 | #if !defined(VMS) |
| 154 | if (dotimes) { |
| 155 | utb.actime = sb.st_atimest_atim.tv_sec; |
| 156 | utb.modtime = sb.st_mtimest_mtim.tv_sec; |
| 157 | if (utime(toname, &utb) < 0) fail("cannot set times of %s", toname); |
| 158 | } |
| 159 | # ifdef HAVE_FCHMOD |
| 160 | if (fchmod(tofd, mode) < 0) |
| 161 | # else |
| 162 | if (chmod(toname, mode) < 0) |
| 163 | # endif |
| 164 | fail("cannot change mode of %s", toname); |
| 165 | #endif |
| 166 | if ((owner || group) && fchown(tofd, uid, gid) < 0) |
| 167 | fail("cannot change owner of %s", toname); |
| 168 | |
| 169 | /* Must check for delayed (NFS) write errors on close. */ |
| 170 | if (close(tofd) < 0) fail("cannot write to %s", toname); |
| 171 | close(fromfd); |
| 172 | #if defined(VMS) |
| 173 | if (chmod(toname, (mode & (S_IREAD0400 | S_IWRITE0200))) < 0) |
| 174 | fail("cannot change mode of %s", toname); |
| 175 | if (dotimes) { |
| 176 | utb.actime = sb.st_atimest_atim.tv_sec; |
| 177 | utb.modtime = sb.st_mtimest_mtim.tv_sec; |
| 178 | if (utime(toname, &utb) < 0) fail("cannot set times of %s", toname); |
| 179 | } |
| 180 | #endif |
| 181 | } |
| 182 | |
| 183 | static void copydir(char* from, char* to, mode_t mode, char* group, char* owner, |
| 184 | int dotimes, uid_t uid, gid_t gid) { |
| 185 | DIR* dir; |
| 186 | struct dirent* ep; |
| 187 | struct stat sb; |
| 188 | char *base, *destdir, *direntry, *destentry; |
| 189 | |
| 190 | base = xbasename(from); |
| 191 | |
| 192 | /* create destination directory */ |
| 193 | destdir = xmalloc((unsigned int)(strlen(to) + 1 + strlen(base) + 1)); |
| 194 | sprintf(destdir, "%s%s%s", to, _DIRECTORY_SEPARATOR"/", base); |
| 195 | if (mkdirs(destdir, mode) != 0) { |
| 196 | fail("cannot make directory %s\n", destdir); |
| 197 | free(destdir); |
| 198 | return; |
| 199 | } |
| 200 | |
| 201 | if (!(dir = opendir(from))) { |
| 202 | fail("cannot open directory %s\n", from); |
| 203 | free(destdir); |
| 204 | return; |
| 205 | } |
| 206 | |
| 207 | direntry = xmalloc((unsigned int)PATH_MAX4096); |
| 208 | destentry = xmalloc((unsigned int)PATH_MAX4096); |
| 209 | |
| 210 | while ((ep = readdir(dir))) { |
| 211 | if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; |
| 212 | |
| 213 | sprintf(direntry, "%s/%s", from, ep->d_name); |
| 214 | sprintf(destentry, "%s%s%s", destdir, _DIRECTORY_SEPARATOR"/", ep->d_name); |
| 215 | |
| 216 | if (stat(direntry, &sb) == 0 && S_ISDIR(sb.st_mode)((((sb.st_mode)) & 0170000) == (0040000))) |
| 217 | copydir(direntry, destdir, mode, group, owner, dotimes, uid, gid); |
| 218 | else |
| 219 | copyfile(direntry, destentry, mode, group, owner, dotimes, uid, gid); |
| 220 | } |
| 221 | |
| 222 | free(destdir); |
| 223 | free(direntry); |
| 224 | free(destentry); |
| 225 | closedir(dir); |
| 226 | } |
| 227 | |
| 228 | int main(int argc, char** argv) { |
| 229 | int onlydir, dodir, dolink, dorelsymlink, dotimes, opt, len, lplen, tdlen, |
| 230 | bnlen, exists; |
| 231 | mode_t mode = 0755; |
| 232 | char *linkprefix, *owner, *group, *cp, *cwd, *todir, *toname, *name, *base, |
| 233 | *linkname, buf[BUFSIZ8192]; |
| 234 | uid_t uid; |
| 235 | gid_t gid; |
| 236 | struct stat sb, tosb, fromsb; |
| 237 | |
| 238 | program = argv[0]; |
| 239 | cwd = linkname = linkprefix = owner = group = 0; |
| 240 | onlydir = dodir = dolink = dorelsymlink = dotimes = lplen = 0; |
| 241 | |
| 242 | while ((opt = getopt(argc, argv, "C:DdlL:Rm:o:g:t")) != EOF(-1)) { |
| 243 | switch (opt) { |
| 244 | case 'C': |
| 245 | cwd = optarg; |
| 246 | break; |
| 247 | case 'D': |
| 248 | onlydir = 1; |
| 249 | break; |
| 250 | case 'd': |
| 251 | dodir = 1; |
| 252 | break; |
| 253 | case 'L': |
| 254 | linkprefix = optarg; |
| 255 | lplen = strlen(linkprefix); |
| 256 | dolink = 1; |
| 257 | break; |
| 258 | case 'R': |
| 259 | dolink = dorelsymlink = 1; |
| 260 | break; |
| 261 | case 'm': |
| 262 | mode = strtoul(optarg, &cp, 8); |
| 263 | if (mode == 0 && cp == optarg) usage(); |
| 264 | break; |
| 265 | case 'o': |
| 266 | owner = optarg; |
| 267 | break; |
| 268 | case 'g': |
| 269 | group = optarg; |
| 270 | break; |
| 271 | case 't': |
| 272 | dotimes = 1; |
| 273 | break; |
| 274 | default: |
| 275 | usage(); |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | argc -= optind; |
| 280 | argv += optind; |
| 281 | if (argc < 2 - onlydir) usage(); |
| 282 | |
| 283 | todir = argv[argc - 1]; |
| 284 | if ((stat(todir, &sb) < 0 || !S_ISDIR(sb.st_mode)((((sb.st_mode)) & 0170000) == (0040000))) && |
| 285 | mkdirs(todir, 0777) < 0) { |
| 286 | fail("cannot make directory %s", todir); |
| 287 | } |
| 288 | if (onlydir) return 0; |
| 289 | |
| 290 | if (!cwd) { |
| 291 | #ifndef NEEDS_GETCWD |
| 292 | # ifndef GETCWD_CANT_MALLOC |
| 293 | cwd = getcwd(0, PATH_MAX4096); |
| 294 | # else |
| 295 | cwd = malloc(PATH_MAX4096 + 1); |
| 296 | cwd = getcwd(cwd, PATH_MAX4096); |
| 297 | # endif |
| 298 | #else |
| 299 | cwd = malloc(PATH_MAX4096 + 1); |
| 300 | cwd = getwd(cwd); |
| 301 | #endif |
| 302 | } |
| 303 | |
| 304 | xchdir(todir); |
| 305 | #ifndef NEEDS_GETCWD |
| 306 | # ifndef GETCWD_CANT_MALLOC |
| 307 | todir = getcwd(0, PATH_MAX4096); |
| 308 | # else |
| 309 | todir = malloc(PATH_MAX4096 + 1); |
| 310 | todir = getcwd(todir, PATH_MAX4096); |
| 311 | # endif |
| 312 | #else |
| 313 | todir = malloc(PATH_MAX4096 + 1); |
| 314 | todir = getwd(todir); |
| 315 | #endif |
| 316 | tdlen = strlen(todir); |
Value stored to 'tdlen' is never read | |
| 317 | xchdir(cwd); |
| 318 | tdlen = strlen(todir); |
| 319 | |
| 320 | uid = owner ? touid(owner) : (uid_t)(-1); |
| 321 | gid = group ? togid(group) : (gid_t)(-1); |
| 322 | |
| 323 | while (--argc > 0) { |
| 324 | name = *argv++; |
| 325 | len = strlen(name); |
| 326 | base = xbasename(name); |
| 327 | bnlen = strlen(base); |
| 328 | toname = xmalloc((unsigned int)(tdlen + 1 + bnlen + 1)); |
| 329 | sprintf(toname, "%s%s%s", todir, _DIRECTORY_SEPARATOR"/", base); |
| 330 | exists = (lstat(toname, &tosb) == 0); |
| 331 | |
| 332 | if (dodir) { |
| 333 | /* -d means create a directory, always */ |
| 334 | if (exists && !S_ISDIR(tosb.st_mode)((((tosb.st_mode)) & 0170000) == (0040000))) { |
| 335 | (void)unlink(toname); |
| 336 | exists = 0; |
| 337 | } |
| 338 | if (!exists && mkdir(toname, mode) < 0) |
| 339 | fail("cannot make directory %s", toname); |
| 340 | if ((owner || group) && chown(toname, uid, gid) < 0) |
| 341 | fail("cannot change owner of %s", toname); |
| 342 | } else if (dolink) { |
| 343 | if (access(name, R_OK4) != 0) { |
| 344 | fail("cannot access %s", name); |
| 345 | } |
| 346 | if (*name == '/') { |
| 347 | /* source is absolute pathname, link to it directly */ |
| 348 | linkname = 0; |
| 349 | } else { |
| 350 | if (linkprefix) { |
| 351 | /* -L prefixes names with a $cwd arg. */ |
| 352 | len += lplen + 1; |
| 353 | linkname = xmalloc((unsigned int)(len + 1)); |
| 354 | sprintf(linkname, "%s/%s", linkprefix, name); |
| 355 | } else if (dorelsymlink) { |
| 356 | /* Symlink the relative path from todir to source name. */ |
| 357 | linkname = xmalloc(PATH_MAX4096); |
| 358 | |
| 359 | if (*todir == '/') { |
| 360 | /* todir is absolute: skip over common prefix. */ |
| 361 | lplen = relatepaths(todir, cwd, linkname); |
| 362 | strcpy(linkname + lplen, name); |
| 363 | } else { |
| 364 | /* todir is named by a relative path: reverse it. */ |
| 365 | reversepath(todir, name, len, linkname); |
| 366 | xchdir(cwd); |
| 367 | } |
| 368 | |
| 369 | len = strlen(linkname); |
| 370 | } |
| 371 | name = linkname; |
| 372 | } |
| 373 | |
| 374 | /* Check for a pre-existing symlink with identical content. */ |
| 375 | if (exists && |
| 376 | (!S_ISLNK(tosb.st_mode)((((tosb.st_mode)) & 0170000) == (0120000)) || readlink(toname, buf, sizeof buf) != len || |
| 377 | strncmp(buf, name, (unsigned int)len) != 0 || |
| 378 | ((stat(name, &fromsb) == 0) && (fromsb.st_mtimest_mtim.tv_sec > tosb.st_mtimest_mtim.tv_sec)))) { |
| 379 | (void)(S_ISDIR(tosb.st_mode)((((tosb.st_mode)) & 0170000) == (0040000)) ? rmdir : unlink)(toname); |
| 380 | exists = 0; |
| 381 | } |
| 382 | if (!exists && symlink(name, toname) < 0) |
| 383 | fail("cannot make symbolic link %s", toname); |
| 384 | #ifdef HAVE_LCHOWN |
| 385 | if ((owner || group) && lchown(toname, uid, gid) < 0) |
| 386 | fail("cannot change owner of %s", toname); |
| 387 | #endif |
| 388 | |
| 389 | if (linkname) { |
| 390 | free(linkname); |
| 391 | linkname = 0; |
| 392 | } |
| 393 | } else { |
| 394 | /* Copy from name to toname, which might be the same file. */ |
| 395 | if (stat(name, &sb) == 0 && S_IFDIR0040000 & sb.st_mode) { |
| 396 | /* then is directory: must explicitly create destination dir */ |
| 397 | /* and manually copy files over */ |
| 398 | copydir(name, todir, mode, group, owner, dotimes, uid, gid); |
| 399 | } else { |
| 400 | copyfile(name, toname, mode, group, owner, dotimes, uid, gid); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | free(toname); |
| 405 | } |
| 406 | |
| 407 | free(cwd); |
| 408 | free(todir); |
| 409 | return 0; |
| 410 | } |