char skip_argument[1];
+/*
+ * this used to be a function in it's own write but became a wrapper around
+ * pipespawnv to eliminate redundancy...
+ */
#ifdef STDC_HEADERS
int pipespawn(char *prog, int pipedef, int *stdinfd, int *stdoutfd,
int *stderrfd, ...)
#endif
{
va_list ap;
- int argc;
+ int argc = 0, pid, i;
char **argv;
- int pid, i, inpipe[2], outpipe[2], errpipe[2], passwdpipe[2];
- char *passwdvar = NULL;
- int *passwdfd = NULL;
- char number[NUM_STR_SIZE];
- char *arg;
- char *e;
- int ch;
- char **env;
- char **newenv;
- /*
- * Log the command line and count the args.
- */
- dbprintf(("%s: spawning %s in pipeline\n", debug_prefix_time(NULL), prog));
- dbprintf(("%s: argument list:", debug_prefix(NULL)));
+ /* count args */
arglist_start(ap, stderrfd);
- if ((pipedef & PASSWD_PIPE) != 0) {
- passwdvar = arglist_val(ap, char *);
- passwdfd = arglist_val(ap, int *);
- }
- argc = 0;
- while((arg = arglist_val(ap, char *)) != NULL) {
- if (arg == skip_argument) {
- continue;
- }
+ while(arglist_val(ap, char *) != NULL) {
argc++;
- dbprintf((" "));
- for(i = 0; (ch = arg[i]) != '\0' && isprint(ch) && ch != ' '; i++) {}
- if(ch != '\0' || i == 0) {
- dbprintf(("\""));
- }
- dbprintf(("%s", arg));
- if(ch != '\0' || i == 0) {
- dbprintf(("\""));
- }
}
arglist_end(ap);
- dbprintf(("\n"));
/*
- * Create the pipes
+ * Create the argument vector.
*/
- if ((pipedef & STDIN_PIPE) != 0) {
- if(pipe(inpipe) == -1) {
- error("error [open pipe to %s: %s]", prog, strerror(errno));
- }
- }
- if ((pipedef & STDOUT_PIPE) != 0) {
- if(pipe(outpipe) == -1) {
- error("error [open pipe to %s: %s]", prog, strerror(errno));
- }
- }
- if ((pipedef & STDERR_PIPE) != 0) {
- if(pipe(errpipe) == -1) {
- error("error [open pipe to %s: %s]", prog, strerror(errno));
- }
- }
- if ((pipedef & PASSWD_PIPE) != 0) {
- if(pipe(passwdpipe) == -1) {
- error("error [open pipe to %s: %s]", prog, strerror(errno));
- }
+ arglist_start(ap, stderrfd);
+ argv = (char **)alloc((argc + 1) * sizeof(*argv));
+ i = 0;
+ while((argv[i] = arglist_val(ap, char *)) != NULL) {
+ if (argv[i] != skip_argument) {
+ i++;
+ }
}
+ arglist_end(ap);
- /*
- * Fork and set up the return or run the program.
- */
- switch(pid = fork()) {
- case -1:
- e = strerror(errno);
- error("error [fork %s: %s]", prog, e);
- default: /* parent process */
- if ((pipedef & STDIN_PIPE) != 0) {
- aclose(inpipe[0]); /* close input side of pipe */
- *stdinfd = inpipe[1];
- }
- if ((pipedef & STDOUT_PIPE) != 0) {
- aclose(outpipe[1]); /* close output side of pipe */
- *stdoutfd = outpipe[0];
- }
- if ((pipedef & STDERR_PIPE) != 0) {
- aclose(errpipe[1]); /* close output side of pipe */
- *stderrfd = errpipe[0];
- }
- if ((pipedef & PASSWD_PIPE) != 0) {
- aclose(passwdpipe[0]); /* close input side of pipe */
- *passwdfd = passwdpipe[1];
- }
- break;
- case 0: /* child process */
- if ((pipedef & STDIN_PIPE) != 0) {
- aclose(inpipe[1]); /* close output side of pipe */
- } else {
- inpipe[0] = *stdinfd;
- }
- if ((pipedef & STDOUT_PIPE) != 0) {
- aclose(outpipe[0]); /* close input side of pipe */
- } else {
- outpipe[1] = *stdoutfd;
- }
- if ((pipedef & STDERR_PIPE) != 0) {
- aclose(errpipe[0]); /* close input side of pipe */
- } else {
- errpipe[1] = *stderrfd;
- }
- if ((pipedef & PASSWD_PIPE) != 0) {
- aclose(passwdpipe[1]); /* close output side of pipe */
- }
-
- /*
- * Shift the pipes to the standard file descriptors as requested.
- */
- if(dup2(inpipe[0], 0) == -1) {
- error("error [spawn %s: dup2 in: %s]", prog, strerror(errno));
- }
- if(dup2(outpipe[1], 1) == -1) {
- error("error [spawn %s: dup2 out: %s]", prog, strerror(errno));
- }
- if(dup2(errpipe[1], 2) == -1) {
- error("error [spawn %s: dup2 err: %s]", prog, strerror(errno));
- }
-
- /*
- * Create the argument vector.
- */
- arglist_start(ap, stderrfd);
- if ((pipedef & PASSWD_PIPE) != 0) {
- passwdvar = arglist_val(ap, char *);
- passwdfd = arglist_val(ap, int *);
- }
- argv = (char **)alloc((argc + 1) * sizeof(*argv));
- i = 0;
- while((argv[i] = arglist_val(ap, char *)) != NULL) {
- if (argv[i] != skip_argument) {
- i++;
- }
- }
- arglist_end(ap);
-
- /*
- * Get the "safe" environment. If we are sending a password to
- * the child via a pipe, add the environment variable for that.
- */
- env = safe_env();
- if ((pipedef & PASSWD_PIPE) != 0) {
- for(i = 0; env[i] != NULL; i++) {}
- newenv = (char **)alloc((i + 1 + 1) * sizeof(*newenv));
- ap_snprintf(number, sizeof(number), "%d", passwdpipe[0]);
- newenv[0] = vstralloc(passwdvar, "=", number, NULL);
- for(i = 0; (newenv[i + 1] = env[i]) != NULL; i++) {}
- env = newenv;
- }
-
- execve(prog, argv, env);
- e = strerror(errno);
- error("error [exec %s: %s]", prog, e);
- /* NOTREACHED */
- }
+ pid = pipespawnv_passwd(prog, pipedef, stdinfd, stdoutfd, stderrfd, NULL, NULL, argv);
+ amfree(argv);
return pid;
}
int pipedef;
int *stdinfd, *stdoutfd, *stderrfd;
char **my_argv;
+{
+ return pipespawnv_passwd(prog, pipedef, stdinfd, stdoutfd, stderrfd,
+ NULL, NULL, my_argv);
+}
+
+int pipespawnv_passwd(prog, pipedef, stdinfd, stdoutfd, stderrfd, passwdvar, passwdfd, my_argv)
+char *prog;
+int pipedef;
+int *stdinfd, *stdoutfd, *stderrfd;
+char *passwdvar;
+int *passwdfd;
+char **my_argv;
{
int argc;
int pid, i, inpipe[2], outpipe[2], errpipe[2], passwdpipe[2];
- char *passwdvar = NULL;
- int *passwdfd = NULL;
char number[NUM_STR_SIZE];
char **arg;
char *e;
} else {
errpipe[1] = *stderrfd;
}
+ if ((pipedef & PASSWD_PIPE) != 0) {
+ aclose(passwdpipe[1]); /* close output side of pipe */
+ }
/*
* Shift the pipes to the standard file descriptors as requested.
if ((pipedef & PASSWD_PIPE) != 0) {
for(i = 0; env[i] != NULL; i++) {}
newenv = (char **)alloc((i + 1 + 1) * sizeof(*newenv));
- ap_snprintf(number, sizeof(number), "%d", passwdpipe[0]);
+ snprintf(number, sizeof(number), "%d", passwdpipe[0]);
newenv[0] = vstralloc(passwdvar, "=", number, NULL);
for(i = 0; (newenv[i + 1] = env[i]) != NULL; i++) {}
+ amfree(env);
env = newenv;
}
projects / debian / amanda / blobdiff