Add Norman Brandinger's suggested `-m' option in plink, to read the

remote command from a local file. Advantage: you can have more than
one line in it, so you can remotely run what's effectively a small
script.

[originally from svn r1010]

plink.c

@@ -238,6 +238,7 @@ static void usage(void)
     printf("  -ssh      force use of ssh protocol\n");
     printf("  -P port   connect to specified port\n");
     printf("  -pw passw login with specified password\n");
+    printf("  -m file   read remote command(s) from file\n");
     exit(1);
 }
 
@@ -319,6 +320,35 @@ int main(int argc, char **argv) {
                 --argc, username = *++argv;
                 strncpy(cfg.username, username, sizeof(cfg.username));
                 cfg.username[sizeof(cfg.username)-1] = '\0';
+            } else if (!strcmp(p, "-m") && argc > 1) {
+                char *filename, *command;
+                int cmdlen, cmdsize;
+                FILE *fp;
+                int c, d;
+
+                --argc, filename = *++argv;
+
+                cmdlen = cmdsize = 0;
+                command = NULL;
+                fp = fopen(filename, "r");
+                if (!fp) {
+                    fprintf(stderr, "plink: unable to open command "
+                            "file \"%s\"\n", filename);
+                    return 1;
+                }
+                do {
+                    c = fgetc(fp);
+                    d = c;
+                    if (c == EOF)
+                        d = 0;
+                    if (cmdlen >= cmdsize) {
+                        cmdsize = cmdlen + 512;
+                        command = srealloc(command, cmdsize);
+                    }
+                    command[cmdlen++] = d;
+                } while (c != EOF);
+                cfg.remote_cmd_ptr = command;
+                cfg.nopty = TRUE;      /* command => no terminal */
             } else if (!strcmp(p, "-P") && argc > 1) {
                 --argc, portnumber = atoi(*++argv);
             }
@@ -427,7 +457,7 @@ int main(int argc, char **argv) {
         usage();
     }
 
-    if (!*cfg.remote_cmd)
+    if (!*cfg.remote_cmd_ptr)
         flags |= FLAG_INTERACTIVE;
 
     /*

putty.h

@@ -168,6 +168,8 @@ typedef struct {
     int ping_interval;                 /* in seconds */
     /* SSH options */
     char remote_cmd[512];
+    char *remote_cmd_ptr;              /* might point to a larger command
+                                        * but never for loading/saving */
     int nopty;
     int compression;
     int agentfwd;

settings.c

@@ -72,7 +72,6 @@ void save_settings (char *section, int do_host, Config *cfg) {
     write_setting_i (sesskey, "NoPTY", cfg->nopty);
     write_setting_i (sesskey, "Compression", cfg->compression);
     write_setting_i (sesskey, "AgentFwd", cfg->agentfwd);
-    write_setting_s (sesskey, "RemoteCmd", cfg->remote_cmd);
     write_setting_s (sesskey, "Cipher",
                      cfg->cipher == CIPHER_BLOWFISH ? "blowfish" :
                      cfg->cipher == CIPHER_DES ? "des" :
@@ -161,6 +160,7 @@ void load_settings (char *section, int do_host, Config *cfg) {
     sesskey = open_settings_r(section);
 
     cfg->ssh_subsys = 0;               /* FIXME: load this properly */
+    cfg->remote_cmd_ptr = cfg->remote_cmd;
 
     gpps (sesskey, "HostName", "", cfg->host, sizeof(cfg->host));
     gppi (sesskey, "PortNumber", default_port, &cfg->port);
@@ -213,7 +213,6 @@ void load_settings (char *section, int do_host, Config *cfg) {
     gppi (sesskey, "NoPTY", 0, &cfg->nopty);
     gppi (sesskey, "Compression", 0, &cfg->compression);
     gppi (sesskey, "AgentFwd", 0, &cfg->agentfwd);
-    gpps (sesskey, "RemoteCmd", "", cfg->remote_cmd, sizeof(cfg->remote_cmd));
     {
 	char cipher[10];
 	gpps (sesskey, "Cipher", "3des", cipher, 10);

ssh.c

@@ -2127,8 +2127,8 @@ static void ssh1_protocol(unsigned char *in, int inlen, int ispkt) {
 	zlib_decompress_init();
     }
 
-    if (*cfg.remote_cmd)
+    if (*cfg.remote_cmd_ptr)
-        send_packet(SSH1_CMSG_EXEC_CMD, PKT_STR, cfg.remote_cmd, PKT_END);
+        send_packet(SSH1_CMSG_EXEC_CMD, PKT_STR, cfg.remote_cmd_ptr, PKT_END);
     else
         send_packet(SSH1_CMSG_EXEC_SHELL, PKT_END);
     logevent("Started session");
@@ -3578,11 +3578,11 @@ static void do_ssh2_authconn(unsigned char *in, int inlen, int ispkt)
     if (cfg.ssh_subsys) {
         ssh2_pkt_addstring("subsystem");
         ssh2_pkt_addbool(1);           /* want reply */
-        ssh2_pkt_addstring(cfg.remote_cmd);
+        ssh2_pkt_addstring(cfg.remote_cmd_ptr);
-    } else if (*cfg.remote_cmd) {
+    } else if (*cfg.remote_cmd_ptr) {
         ssh2_pkt_addstring("exec");
         ssh2_pkt_addbool(1);           /* want reply */
-        ssh2_pkt_addstring(cfg.remote_cmd);
+        ssh2_pkt_addstring(cfg.remote_cmd_ptr);
     } else {
         ssh2_pkt_addstring("shell");
         ssh2_pkt_addbool(1);           /* want reply */