X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Fplugins%2Fpassprompt.c;h=ab9f390c2d1c968c8054b60e1e5da7cc81eb5e00;hb=HEAD;hp=a579b912e70cfec5140b5396192b0e05ae3c4eb2;hpb=95d719f47943c479df4d7bf13eb928567392166d;p=ppp.git

diff --git a/pppd/plugins/passprompt.c b/pppd/plugins/passprompt.c
index a579b91..7779d51 100644
--- a/pppd/plugins/passprompt.c
+++ b/pppd/plugins/passprompt.c
@@ -8,15 +8,30 @@
  *  as published by the Free Software Foundation; either version
  *  2 of the License, or (at your option) any later version.
  */
+
 #include <errno.h>
 #include <unistd.h>
 #include <sys/wait.h>
+#include <sys/param.h>
+#include <limits.h>
+#include <stdio.h>
 #include <syslog.h>
-#include "pppd.h"
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include <pppd/pppd.h>
+#include <pppd/upap.h>
+#include <pppd/eap.h>
+#include <pppd/options.h>
+
+char pppd_version[] = PPPD_VERSION;
 
 static char promptprog[PATH_MAX+1];
+static int promptprog_refused = 0;
 
-static option_t options[] = {
+static struct option options[] = {
     { "promptprog", o_string, promptprog,
       "External PAP password prompting program",
       OPT_STATIC, NULL, PATH_MAX },
@@ -27,10 +42,10 @@ static int promptpass(char *user, char *passwd)
 {
     int p[2];
     pid_t kid;
-    int readgood, wstat;
-    size_t red;
+    int readgood, wstat, ret;
+    ssize_t red;
 
-    if (promptprog[0] == 0 || access(promptprog, X_OK) < 0)
+    if (promptprog_refused || promptprog[0] == 0 || access(promptprog, X_OK) < 0)
 	return -1;	/* sorry, can't help */
 
     if (!passwd)
@@ -48,16 +63,22 @@ static int promptpass(char *user, char *passwd)
     }
     if (!kid) {
 	/* we are the child, exec the program */
-	char *argv[4], fdstr[32];
-	sys_close();
+	char *argv[5], fdstr[32];
+	ppp_sys_close();
 	closelog();
 	close(p[0]);
-	seteuid(getuid());
-	setegid(getgid());
-	argv[0] = promptprog;
-	argv[1] = user;
-	argv[2] = remote_name;
+	ret = seteuid(getuid());
+	if (ret != 0) {
+		warn("Couldn't set effective user id");
+	}
+	ret = setegid(getgid());
+	if (ret != 0) {
+		warn("Couldn't set effective user id");
+	}
 	sprintf(fdstr, "%d", p[1]);
+	argv[0] = promptprog;
+	argv[1] = strdup(user);
+	argv[2] = strdup(ppp_remote_name());
 	argv[3] = fdstr;
 	argv[4] = 0;
 	execv(*argv, argv);
@@ -72,18 +93,19 @@ static int promptpass(char *user, char *passwd)
 	if (red == 0)
 	    break;
 	if (red < 0) {
+	    if (errno == EINTR && !ppp_signaled(SIGTERM))
+		continue;
 	    error("Can't read secret from %s: %m", promptprog);
 	    readgood = -1;
 	    break;
 	}
 	readgood += red;
     } while (readgood < MAXSECRETLEN - 1);
-    passwd[readgood] = 0;
     close(p[0]);
 
     /* now wait for child to exit */
     while (waitpid(kid, &wstat, 0) < 0) {
-	if (errno != EINTR) {
+	if (errno != EINTR || ppp_signaled(SIGTERM)) {
 	    warn("error waiting for %s: %m", promptprog);
 	    break;
 	}
@@ -91,16 +113,25 @@ static int promptpass(char *user, char *passwd)
 
     if (readgood < 0)
 	return 0;
+    passwd[readgood] = 0;
     if (!WIFEXITED(wstat))
 	warn("%s terminated abnormally", promptprog);
-    if (WEXITSTATUS(wstat))
-	warn("%s exited with code %d", promptprog, WEXITSTATUS(status));
-
+    if (WEXITSTATUS(wstat)) {
+	    warn("%s exited with code %d", promptprog, WEXITSTATUS(wstat));
+	    /* code when cancel was hit in the prompt prog */
+	    if (WEXITSTATUS(wstat) == 128) {
+	        promptprog_refused = 1;
+	    }
+	    return -1;
+    }
     return 1;
 }
 
 void plugin_init(void)
 {
-    add_options(options);
+    ppp_add_options(options);
     pap_passwd_hook = promptpass;
+#ifdef PPP_WITH_EAPTLS
+    eaptls_passwd_hook = promptpass;
+#endif
 }