#if defined(NEED_INITGROUPS)
int initgroups(const char *name, gid_t basegid)
{
-/* QNX and MPE do not appear to support supplementary groups. */
+ /* QNX and MPE do not appear to support supplementary groups. */
return 0;
}
#endif
struct tm *lt;
if (!log) {
- if ((log = fopen(AP_LOG_EXEC, "a")) == NULL) {
- fprintf(stderr, "failed to open log file\n");
- perror("fopen");
- exit(1);
- }
+ if ((log = fopen(AP_LOG_EXEC, "a")) == NULL) {
+ fprintf(stderr, "failed to open log file\n");
+ perror("fopen");
+ exit(1);
+ }
}
time(&timevar);
lt = localtime(&timevar);
fprintf(log, "[%d-%.2d-%.2d %.2d:%.2d:%.2d]: ",
- lt->tm_year + 1900, lt->tm_mon + 1, lt->tm_mday,
- lt->tm_hour, lt->tm_min, lt->tm_sec);
+ lt->tm_year + 1900, lt->tm_mon + 1, lt->tm_mday,
+ lt->tm_hour, lt->tm_min, lt->tm_sec);
vfprintf(log, fmt, ap);
if ((cleanenv = (char **) calloc(AP_ENVBUF, sizeof(char *))) == NULL) {
log_err("failed to malloc memory for environment\n");
- exit(120);
+ exit(120);
}
sprintf(pathbuf, "PATH=%s", AP_SAFE_PATH);
cidx++;
for (ep = environ; *ep && cidx < AP_ENVBUF-1; ep++) {
- if (!strncmp(*ep, "HTTP_", 5)) {
- cleanenv[cidx] = *ep;
- cidx++;
- }
- else {
- for (idx = 0; safe_env_lst[idx]; idx++) {
- if (!strncmp(*ep, safe_env_lst[idx],
- strlen(safe_env_lst[idx]))) {
- cleanenv[cidx] = *ep;
- cidx++;
- break;
- }
- }
- }
+ if (!strncmp(*ep, "HTTP_", 5)) {
+ cleanenv[cidx] = *ep;
+ cidx++;
+ }
+ else {
+ for (idx = 0; safe_env_lst[idx]; idx++) {
+ if (!strncmp(*ep, safe_env_lst[idx],
+ strlen(safe_env_lst[idx]))) {
+ cleanenv[cidx] = *ep;
+ cidx++;
+ break;
+ }
+ }
+ }
}
cleanenv[cidx] = NULL;
int main(int argc, char *argv[])
{
- int userdir = 0; /* ~userdir flag */
- uid_t uid; /* user information */
- gid_t gid; /* target group placeholder */
- char *target_uname; /* target user name */
- char *target_gname; /* target group name */
- char *target_homedir; /* target home directory */
- char *actual_uname; /* actual user name */
- char *actual_gname; /* actual group name */
- char *prog; /* name of this program */
- char *cmd; /* command to be executed */
- char cwd[AP_MAXPATH]; /* current working directory */
- char dwd[AP_MAXPATH]; /* docroot working directory */
- struct passwd *pw; /* password entry holder */
- struct group *gr; /* group entry holder */
- struct stat dir_info; /* directory info holder */
- struct stat prg_info; /* program info holder */
+ int userdir = 0; /* ~userdir flag */
+ uid_t uid; /* user information */
+ gid_t gid; /* target group placeholder */
+ char *target_uname; /* target user name */
+ char *target_gname; /* target group name */
+ char *target_homedir; /* target home directory */
+ char *actual_uname; /* actual user name */
+ char *actual_gname; /* actual group name */
+ char *prog; /* name of this program */
+ char *cmd; /* command to be executed */
+ char cwd[AP_MAXPATH]; /* current working directory */
+ char dwd[AP_MAXPATH]; /* docroot working directory */
+ struct passwd *pw; /* password entry holder */
+ struct group *gr; /* group entry holder */
+ struct stat dir_info; /* directory info holder */
+ struct stat prg_info; /* program info holder */
prog = argv[0];
/*
*/
uid = getuid();
if ((pw = getpwuid(uid)) == NULL) {
- log_err("crit: invalid uid: (%ld)\n", uid);
- exit(102);
+ log_err("crit: invalid uid: (%ld)\n", uid);
+ exit(102);
}
/*
* See if this is a 'how were you compiled' request, and
* all of them to variables. Otherwise, error out.
*/
if (argc < 4) {
- log_err("too few arguments\n");
- exit(101);
+ log_err("too few arguments\n");
+ exit(101);
}
target_uname = argv[1];
target_gname = argv[2];
/* User name comparisons are case insensitive on BS2000/OSD */
if (strcasecmp(AP_HTTPD_USER, pw->pw_name)) {
log_err("user mismatch (%s instead of %s)\n", pw->pw_name, AP_HTTPD_USER);
- exit(103);
+ exit(103);
}
#else /*_OSD_POSIX*/
if (strcmp(AP_HTTPD_USER, pw->pw_name)) {
log_err("user mismatch (%s instead of %s)\n", pw->pw_name, AP_HTTPD_USER);
- exit(103);
+ exit(103);
}
#endif /*_OSD_POSIX*/
* found, error out. Naughty naughty crackers.
*/
if ((cmd[0] == '/') || (!strncmp(cmd, "../", 3))
- || (strstr(cmd, "/../") != NULL)) {
+ || (strstr(cmd, "/../") != NULL)) {
log_err("invalid command (%s)\n", cmd);
- exit(104);
+ exit(104);
}
/*
* target username.
*/
if (!strncmp("~", target_uname, 1)) {
- target_uname++;
- userdir = 1;
+ target_uname++;
+ userdir = 1;
}
/*
*/
if (strspn(target_uname, "1234567890") != strlen(target_uname)) {
if ((pw = getpwnam(target_uname)) == NULL) {
- log_err("invalid target user name: (%s)\n", target_uname);
- exit(105);
+ log_err("invalid target user name: (%s)\n", target_uname);
+ exit(105);
}
}
else {
* Error out if the target group name is invalid.
*/
if (strspn(target_gname, "1234567890") != strlen(target_gname)) {
- if ((gr = getgrnam(target_gname)) == NULL) {
- log_err("invalid target group name: (%s)\n", target_gname);
- exit(106);
- }
- gid = gr->gr_gid;
- actual_gname = strdup(gr->gr_name);
+ if ((gr = getgrnam(target_gname)) == NULL) {
+ log_err("invalid target group name: (%s)\n", target_gname);
+ exit(106);
+ }
+ gid = gr->gr_gid;
+ actual_gname = strdup(gr->gr_name);
}
else {
- gid = atoi(target_gname);
- actual_gname = strdup(target_gname);
+ gid = atoi(target_gname);
+ actual_gname = strdup(target_gname);
}
#ifdef _OSD_POSIX
* Initialize BS2000 user environment
*/
{
- pid_t pid;
- int status;
-
- switch (pid = ufork(target_uname))
- {
- case -1: /* Error */
- log_err("failed to setup bs2000 environment for user %s: %s\n",
- target_uname, strerror(errno));
- exit(150);
- case 0: /* Child */
- break;
- default: /* Father */
- while (pid != waitpid(pid, &status, 0))
- ;
- /* @@@ FIXME: should we deal with STOP signals as well? */
- if (WIFSIGNALED(status))
- kill (getpid(), WTERMSIG(status));
- exit(WEXITSTATUS(status));
- }
+ pid_t pid;
+ int status;
+
+ switch (pid = ufork(target_uname)) {
+ case -1: /* Error */
+ log_err("failed to setup bs2000 environment for user %s: %s\n",
+ target_uname, strerror(errno));
+ exit(150);
+ case 0: /* Child */
+ break;
+ default: /* Father */
+ while (pid != waitpid(pid, &status, 0))
+ ;
+ /* @@@ FIXME: should we deal with STOP signals as well? */
+ if (WIFSIGNALED(status)) {
+ kill (getpid(), WTERMSIG(status));
+ }
+ exit(WEXITSTATUS(status));
+ }
}
#endif /*_OSD_POSIX*/
-
+
/*
* Save these for later since initgroups will hose the struct
*/
* before we setuid().
*/
log_err("uid: (%s/%s) gid: (%s/%s) cmd: %s\n",
- target_uname, actual_uname,
- target_gname, actual_gname,
- cmd);
+ target_uname, actual_uname,
+ target_gname, actual_gname,
+ cmd);
/*
* Error out if attempt is made to execute as root or as
* a UID less than AP_UID_MIN. Tsk tsk.
*/
if ((uid == 0) || (uid < AP_UID_MIN)) {
- log_err("cannot run as forbidden uid (%d/%s)\n", uid, cmd);
- exit(107);
+ log_err("cannot run as forbidden uid (%d/%s)\n", uid, cmd);
+ exit(107);
}
/*
* or as a GID less than AP_GID_MIN. Tsk tsk.
*/
if ((gid == 0) || (gid < AP_GID_MIN)) {
- log_err("cannot run as forbidden gid (%d/%s)\n", gid, cmd);
- exit(108);
+ log_err("cannot run as forbidden gid (%d/%s)\n", gid, cmd);
+ exit(108);
}
/*
* and setgid() to the target group. If unsuccessful, error out.
*/
if (((setgid(gid)) != 0) || (initgroups(actual_uname, gid) != 0)) {
- log_err("failed to setgid (%ld: %s)\n", gid, cmd);
- exit(109);
+ log_err("failed to setgid (%ld: %s)\n", gid, cmd);
+ exit(109);
}
/*
* setuid() to the target user. Error out on fail.
*/
if ((setuid(uid)) != 0) {
- log_err("failed to setuid (%ld: %s)\n", uid, cmd);
- exit(110);
+ log_err("failed to setuid (%ld: %s)\n", uid, cmd);
+ exit(110);
}
/*
* directories. Yuck.
*/
if (getcwd(cwd, AP_MAXPATH) == NULL) {
- log_err("cannot get current working directory\n");
- exit(111);
+ log_err("cannot get current working directory\n");
+ exit(111);
}
if (userdir) {
- if (((chdir(target_homedir)) != 0) ||
- ((chdir(AP_USERDIR_SUFFIX)) != 0) ||
- ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
- ((chdir(cwd)) != 0)) {
- log_err("cannot get docroot information (%s)\n", target_homedir);
- exit(112);
- }
+ if (((chdir(target_homedir)) != 0) ||
+ ((chdir(AP_USERDIR_SUFFIX)) != 0) ||
+ ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
+ ((chdir(cwd)) != 0)) {
+ log_err("cannot get docroot information (%s)\n", target_homedir);
+ exit(112);
+ }
}
else {
- if (((chdir(AP_DOC_ROOT)) != 0) ||
- ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
- ((chdir(cwd)) != 0)) {
- log_err("cannot get docroot information (%s)\n", AP_DOC_ROOT);
- exit(113);
- }
+ if (((chdir(AP_DOC_ROOT)) != 0) ||
+ ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
+ ((chdir(cwd)) != 0)) {
+ log_err("cannot get docroot information (%s)\n", AP_DOC_ROOT);
+ exit(113);
+ }
}
if ((strncmp(cwd, dwd, strlen(dwd))) != 0) {
- log_err("command not in docroot (%s/%s)\n", cwd, cmd);
- exit(114);
+ log_err("command not in docroot (%s/%s)\n", cwd, cmd);
+ exit(114);
}
/*
* Stat the cwd and verify it is a directory, or error out.
*/
if (((lstat(cwd, &dir_info)) != 0) || !(S_ISDIR(dir_info.st_mode))) {
- log_err("cannot stat directory: (%s)\n", cwd);
- exit(115);
+ log_err("cannot stat directory: (%s)\n", cwd);
+ exit(115);
}
/*
* Error out if cwd is writable by others.
*/
if ((dir_info.st_mode & S_IWOTH) || (dir_info.st_mode & S_IWGRP)) {
- log_err("directory is writable by others: (%s)\n", cwd);
- exit(116);
+ log_err("directory is writable by others: (%s)\n", cwd);
+ exit(116);
}
/*
* Error out if we cannot stat the program.
*/
if (((lstat(cmd, &prg_info)) != 0) || (S_ISLNK(prg_info.st_mode))) {
- log_err("cannot stat program: (%s)\n", cmd);
- exit(117);
+ log_err("cannot stat program: (%s)\n", cmd);
+ exit(117);
}
/*
* Error out if the program is writable by others.
*/
if ((prg_info.st_mode & S_IWOTH) || (prg_info.st_mode & S_IWGRP)) {
- log_err("file is writable by others: (%s/%s)\n", cwd, cmd);
- exit(118);
+ log_err("file is writable by others: (%s/%s)\n", cwd, cmd);
+ exit(118);
}
/*
* Error out if the file is setuid or setgid.
*/
if ((prg_info.st_mode & S_ISUID) || (prg_info.st_mode & S_ISGID)) {
- log_err("file is either setuid or setgid: (%s/%s)\n", cwd, cmd);
- exit(119);
+ log_err("file is either setuid or setgid: (%s/%s)\n", cwd, cmd);
+ exit(119);
}
/*
* the name/group of the cwd or the program.
*/
if ((uid != dir_info.st_uid) ||
- (gid != dir_info.st_gid) ||
- (uid != prg_info.st_uid) ||
- (gid != prg_info.st_gid)) {
- log_err("target uid/gid (%ld/%ld) mismatch "
- "with directory (%ld/%ld) or program (%ld/%ld)\n",
- uid, gid,
- dir_info.st_uid, dir_info.st_gid,
- prg_info.st_uid, prg_info.st_gid);
- exit(120);
+ (gid != dir_info.st_gid) ||
+ (uid != prg_info.st_uid) ||
+ (gid != prg_info.st_gid)) {
+ log_err("target uid/gid (%ld/%ld) mismatch "
+ "with directory (%ld/%ld) or program (%ld/%ld)\n",
+ uid, gid,
+ dir_info.st_uid, dir_info.st_gid,
+ prg_info.st_uid, prg_info.st_gid);
+ exit(120);
}
/*
* Error out if the program is not executable for the user.
* "[error] Premature end of script headers: ..."
*/
if (!(prg_info.st_mode & S_IXUSR)) {
- log_err("file has no execute permission: (%s/%s)\n", cwd, cmd);
- exit(121);
+ log_err("file has no execute permission: (%s/%s)\n", cwd, cmd);
+ exit(121);
}
#ifdef AP_SUEXEC_UMASK
* outside an ifdef'd AP_LOG_EXEC block.
*/
if (log != NULL) {
- fclose(log);
- log = NULL;
+ fclose(log);
+ log = NULL;
}
/*
#ifdef NEED_HASHBANG_EMUL
/* We need the #! emulation when we want to execute scripts */
{
- extern char **environ;
+ extern char **environ;
- ap_execve(cmd, &argv[3], environ);
+ ap_execve(cmd, &argv[3], environ);
}
#else /*NEED_HASHBANG_EMUL*/
execv(cmd, &argv[3]);
*
* Oh well, log the failure and error out.
*/
- log_err("(%d)%s: exec failed (%s)\n", errno,
- strerror(errno), cmd);
+ log_err("(%d)%s: exec failed (%s)\n", errno, strerror(errno), cmd);
exit(255);
}
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