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authorJeffrey Stedfast <fejj@ximian.com>2002-05-10 07:17:33 +0800
committerJeffrey Stedfast <fejj@src.gnome.org>2002-05-10 07:17:33 +0800
commit0cb190d2c220d17da160518e889baac131df1d10 (patch)
tree8e879ef078c9eed302ceedfcf93c1b8d4dbbc271 /camel
parenta23d192991b3abfa64b447a2eaa5219757599e3e (diff)
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New filter function to pipe a message to another program.
2002-05-09 Jeffrey Stedfast <fejj@ximian.com> * camel-filter-search.c (shell_exec): New filter function to pipe a message to another program. svn path=/trunk/; revision=16740
Diffstat (limited to 'camel')
-rw-r--r--camel/ChangeLog5
-rw-r--r--camel/camel-filter-search.c130
2 files changed, 135 insertions, 0 deletions
diff --git a/camel/ChangeLog b/camel/ChangeLog
index fd92c1be87..146e635d65 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,3 +1,8 @@
+2002-05-09 Jeffrey Stedfast <fejj@ximian.com>
+
+ * camel-filter-search.c (shell_exec): New filter function to pipe
+ a message to another program.
+
2002-05-09 Not Zed <NotZed@Ximian.com>
* camel-service.c (camel_service_disconnect): Instead of testing
diff --git a/camel/camel-filter-search.c b/camel/camel-filter-search.c
index c888887edd..a217aeed57 100644
--- a/camel/camel-filter-search.c
+++ b/camel/camel-filter-search.c
@@ -29,10 +29,19 @@
/* (from glibc headers:
POSIX says that <sys/types.h> must be included (by the caller) before <regex.h>. */
+#include <stdio.h>
+#include <stdlib.h>
#include <sys/types.h>
#include <regex.h>
#include <string.h>
+#include <unistd.h>
#include <ctype.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <signal.h>
+#include <sys/wait.h>
+
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
@@ -47,6 +56,7 @@
#include "camel-exception.h"
#include "camel-multipart.h"
#include "camel-stream-mem.h"
+#include "camel-stream-fs.h"
#include "camel-search-private.h"
#include "camel-url.h"
@@ -83,6 +93,7 @@ static ESExpResult *get_current_date (struct _ESExp *f, int argc, struct _ESExpR
static ESExpResult *get_score (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *get_source (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *get_size (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
+static ESExpResult *shell_exec (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
/* builtin functions */
static struct {
@@ -111,6 +122,7 @@ static struct {
{ "get-score", (ESExpFunc *) get_score, 0 },
{ "get-source", (ESExpFunc *) get_source, 0 },
{ "get-size", (ESExpFunc *) get_size, 0 },
+ { "shell-exec", (ESExpFunc *) shell_exec, 0 },
};
@@ -499,6 +511,124 @@ get_size (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageS
return r;
}
+static int
+run_command (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
+{
+ CamelMimeMessage *message;
+ CamelStream *stream;
+ int result, status;
+ int in_fds[2];
+ pid_t pid;
+
+ if (pipe (in_fds) == -1) {
+ camel_exception_setv (fms->ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Failed to create pipe to '%s': %s"),
+ argv[0]->value.string, g_strerror (errno));
+ return -1;
+ }
+
+ if (!(pid = fork ())) {
+ /* child process */
+ GPtrArray *args;
+ int maxfd, i;
+
+ if (dup2 (in_fds[0], STDIN_FILENO) < 0)
+ _exit (255);
+
+ setsid ();
+
+ maxfd = sysconf (_SC_OPEN_MAX);
+ if (maxfd > 0) {
+ for (i = 0; i < maxfd; i++) {
+ if (i != STDIN_FILENO && i != STDOUT_FILENO && i != STDERR_FILENO)
+ close (i);
+ }
+ }
+
+ args = g_ptr_array_new ();
+ for (i = 0; i < argc; i++) {
+ g_ptr_array_add (args, argv[i]->value.string);
+ }
+ g_ptr_array_add (args, NULL);
+
+ execvp (argv[i]->value.string, (char **) args->pdata);
+
+ g_ptr_array_free (args, TRUE);
+
+ fprintf (stderr, "Could not execute %s: %s\n", argv[0]->value.string,
+ g_strerror (errno));
+ _exit (255);
+ } else if (pid < 0) {
+ camel_exception_setv (fms->ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Failed to create create child process '%s': %s"),
+ argv[0]->value.string, g_strerror (errno));
+ return -1;
+ }
+
+ /* parent process */
+ close (in_fds[0]);
+ fcntl (in_fds[1], F_SETFL, O_NONBLOCK);
+
+ stream = camel_stream_fs_new_with_fd (in_fds[1]);
+
+ message = camel_filter_search_get_message (fms, f);
+
+ if (camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), stream) == -1 ||
+ camel_stream_flush (stream) == -1) {
+ if (errno == EINTR)
+ camel_exception_set (fms->ex, CAMEL_EXCEPTION_USER_CANCEL, "User Cancelled");
+ else
+ camel_exception_setv (fms->ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Failed to write message to '%s': %s"),
+ argv[0]->value.string, g_strerror (errno));
+ }
+
+ camel_object_unref (CAMEL_OBJECT (stream));
+
+ result = waitpid (pid, &status, 0);
+
+ if (result == -1 && errno == EINTR) {
+ /* child process is hanging... */
+ kill (pid, SIGTERM);
+ sleep (1);
+ result = waitpid (pid, &status, WNOHANG);
+ if (result == 0) {
+ /* ...still hanging, set phasers to KILL */
+ kill (pid, SIGKILL);
+ sleep (1);
+ result = waitpid (pid, &status, WNOHANG);
+ }
+ }
+
+ if (!camel_exception_is_set (fms->ex) && result != -1 && WIFEXITED (status))
+ return WEXITSTATUS (status);
+ else
+ return -1;
+}
+
+static ESExpResult *
+shell_exec (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
+{
+ ESExpResult *r;
+ int retval, i;
+
+ /* make sure all args are strings */
+ for (i = 0; i < argc; i++) {
+ if (argv[i]->type != ESEXP_RES_STRING) {
+ retval = -1;
+ goto done;
+ }
+ }
+
+ retval = run_command (f, argc, argv, fms);
+
+ done:
+ r = e_sexp_result_new (f, ESEXP_RES_INT);
+ r->value.number = retval;
+
+ return r;
+}
+
/**
* camel_filter_search_match: