]> andersk Git - openssh.git/blobdiff - readconf.c
- (djm) Fix AIX limits from Alexandre Oliva <oliva@lsd.ic.unicamp.br>
[openssh.git] / readconf.c
index fdbd1e7d91db0129b75f21ec70c22441a89eb327..06cfaa1a3697da6f04ddc613eee643585701b8a4 100644 (file)
@@ -14,7 +14,7 @@
  */
 
 #include "includes.h"
-RCSID("$Id$");
+RCSID("$OpenBSD: readconf.c,v 1.43 2000/07/14 22:59:46 markus Exp $");
 
 #include "ssh.h"
 #include "cipher.h"
@@ -92,7 +92,7 @@ typedef enum {
        oBadOption,
        oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication,
        oPasswordAuthentication, oRSAAuthentication, oFallBackToRsh, oUseRsh,
-       oSkeyAuthentication,
+       oSkeyAuthentication, oXAuthLocation,
 #ifdef KRB4
        oKerberosAuthentication,
 #endif /* KRB4 */
@@ -116,6 +116,7 @@ static struct {
 } keywords[] = {
        { "forwardagent", oForwardAgent },
        { "forwardx11", oForwardX11 },
+       { "xauthlocation", oXAuthLocation },
        { "gatewayports", oGatewayPorts },
        { "useprivilegedport", oUsePrivilegedPort },
        { "rhostsauthentication", oRhostsAuthentication },
@@ -163,10 +164,6 @@ static struct {
        { NULL, 0 }
 };
 
-/* Characters considered whitespace in strtok calls. */
-#define WHITESPACE " \t\r\n"
-
-
 /*
  * Adds a local TCP/IP port forward to options.  Never returns if there is an
  * error.
@@ -236,18 +233,20 @@ process_config_line(Options *options, const char *host,
                    char *line, const char *filename, int linenum,
                    int *activep)
 {
-       char buf[256], *cp, *string, **charptr, *cp2;
+       char buf[256], *s, *string, **charptr, *endofnumber, *keyword, *arg;
        int opcode, *intptr, value;
        u_short fwd_port, fwd_host_port;
 
-       /* Skip leading whitespace. */
-       cp = line + strspn(line, WHITESPACE);
-       if (!*cp || *cp == '\n' || *cp == '#')
+       s = line;
+       /* Get the keyword. (Each line is supposed to begin with a keyword). */
+       keyword = strdelim(&s);
+       /* Ignore leading whitespace. */
+       if (*keyword == '\0')
+               keyword = strdelim(&s);
+       if (!*keyword || *keyword == '\n' || *keyword == '#')
                return 0;
 
-       /* Get the keyword. (Each line is supposed to begin with a keyword). */
-       cp = strtok(cp, WHITESPACE);
-       opcode = parse_token(cp, filename, linenum);
+       opcode = parse_token(keyword, filename, linenum);
 
        switch (opcode) {
        case oBadOption:
@@ -257,13 +256,13 @@ process_config_line(Options *options, const char *host,
        case oForwardAgent:
                intptr = &options->forward_agent;
 parse_flag:
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing yes/no argument.", filename, linenum);
                value = 0;      /* To avoid compiler warning... */
-               if (strcmp(cp, "yes") == 0 || strcmp(cp, "true") == 0)
+               if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
                        value = 1;
-               else if (strcmp(cp, "no") == 0 || strcmp(cp, "false") == 0)
+               else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
                        value = 0;
                else
                        fatal("%.200s line %d: Bad yes/no argument.", filename, linenum);
@@ -343,16 +342,16 @@ parse_flag:
 
        case oStrictHostKeyChecking:
                intptr = &options->strict_host_key_checking;
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing yes/no argument.",
                              filename, linenum);
                value = 0;      /* To avoid compiler warning... */
-               if (strcmp(cp, "yes") == 0 || strcmp(cp, "true") == 0)
+               if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
                        value = 1;
-               else if (strcmp(cp, "no") == 0 || strcmp(cp, "false") == 0)
+               else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
                        value = 0;
-               else if (strcmp(cp, "ask") == 0)
+               else if (strcmp(arg, "ask") == 0)
                        value = 2;
                else
                        fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum);
@@ -378,8 +377,8 @@ parse_flag:
 
        case oIdentityFile:
        case oIdentityFile2:
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing argument.", filename, linenum);
                if (*activep) {
                        intptr = (opcode == oIdentityFile) ?
@@ -391,19 +390,23 @@ parse_flag:
                        charptr = (opcode == oIdentityFile) ?
                            &options->identity_files[*intptr] :
                            &options->identity_files2[*intptr];
-                       *charptr = xstrdup(cp);
+                       *charptr = xstrdup(arg);
                        *intptr = *intptr + 1;
                }
                break;
 
+       case oXAuthLocation:
+               charptr=&options->xauth_location;
+               goto parse_string;
+
        case oUser:
                charptr = &options->user;
 parse_string:
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing argument.", filename, linenum);
                if (*activep && *charptr == NULL)
-                       *charptr = xstrdup(cp);
+                       *charptr = xstrdup(arg);
                break;
 
        case oGlobalKnownHostsFile:
@@ -429,10 +432,10 @@ parse_string:
        case oProxyCommand:
                charptr = &options->proxy_command;
                string = xstrdup("");
-               while ((cp = strtok(NULL, WHITESPACE)) != NULL) {
-                       string = xrealloc(string, strlen(string) + strlen(cp) + 2);
+               while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
+                       string = xrealloc(string, strlen(string) + strlen(arg) + 2);
                        strcat(string, " ");
-                       strcat(string, cp);
+                       strcat(string, arg);
                }
                if (*activep && *charptr == NULL)
                        *charptr = string;
@@ -443,15 +446,15 @@ parse_string:
        case oPort:
                intptr = &options->port;
 parse_int:
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing argument.", filename, linenum);
-               if (cp[0] < '0' || cp[0] > '9')
+               if (arg[0] < '0' || arg[0] > '9')
                        fatal("%.200s line %d: Bad number.", filename, linenum);
 
                /* Octal, decimal, or hex format? */
-               value = strtol(cp, &cp2, 0);
-               if (cp == cp2)
+               value = strtol(arg, &endofnumber, 0);
+               if (arg == endofnumber)
                        fatal("%.200s line %d: Bad number.", filename, linenum);
                if (*activep && *intptr == -1)
                        *intptr = value;
@@ -463,59 +466,65 @@ parse_int:
 
        case oCipher:
                intptr = &options->cipher;
-               cp = strtok(NULL, WHITESPACE);
-               value = cipher_number(cp);
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
+                       fatal("%.200s line %d: Missing argument.", filename, linenum);
+               value = cipher_number(arg);
                if (value == -1)
                        fatal("%.200s line %d: Bad cipher '%s'.",
-                             filename, linenum, cp ? cp : "<NONE>");
+                             filename, linenum, arg ? arg : "<NONE>");
                if (*activep && *intptr == -1)
                        *intptr = value;
                break;
 
        case oCiphers:
-               cp = strtok(NULL, WHITESPACE);
-               if (!ciphers_valid(cp))
-                       fatal("%.200s line %d: Bad cipher spec '%s'.",
-                             filename, linenum, cp ? cp : "<NONE>");
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
+                       fatal("%.200s line %d: Missing argument.", filename, linenum);
+               if (!ciphers_valid(arg))
+                       fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
+                             filename, linenum, arg ? arg : "<NONE>");
                if (*activep && options->ciphers == NULL)
-                       options->ciphers = xstrdup(cp);
+                       options->ciphers = xstrdup(arg);
                break;
 
        case oProtocol:
                intptr = &options->protocol;
-               cp = strtok(NULL, WHITESPACE);
-               value = proto_spec(cp);
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
+                       fatal("%.200s line %d: Missing argument.", filename, linenum);
+               value = proto_spec(arg);
                if (value == SSH_PROTO_UNKNOWN)
                        fatal("%.200s line %d: Bad protocol spec '%s'.",
-                             filename, linenum, cp ? cp : "<NONE>");
+                             filename, linenum, arg ? arg : "<NONE>");
                if (*activep && *intptr == SSH_PROTO_UNKNOWN)
                        *intptr = value;
                break;
 
        case oLogLevel:
                intptr = (int *) &options->log_level;
-               cp = strtok(NULL, WHITESPACE);
-               value = log_level_number(cp);
+               arg = strdelim(&s);
+               value = log_level_number(arg);
                if (value == (LogLevel) - 1)
                        fatal("%.200s line %d: unsupported log level '%s'\n",
-                             filename, linenum, cp ? cp : "<NONE>");
+                             filename, linenum, arg ? arg : "<NONE>");
                if (*activep && (LogLevel) * intptr == -1)
                        *intptr = (LogLevel) value;
                break;
 
        case oRemoteForward:
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing argument.", filename, linenum);
-               if (cp[0] < '0' || cp[0] > '9')
+               if (arg[0] < '0' || arg[0] > '9')
                        fatal("%.200s line %d: Badly formatted port number.",
                              filename, linenum);
-               fwd_port = atoi(cp);
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               fwd_port = atoi(arg);
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing second argument.",
                              filename, linenum);
-               if (sscanf(cp, "%255[^:]:%hu", buf, &fwd_host_port) != 2)
+               if (sscanf(arg, "%255[^:]:%hu", buf, &fwd_host_port) != 2)
                        fatal("%.200s line %d: Badly formatted host:port.",
                              filename, linenum);
                if (*activep)
@@ -523,18 +532,18 @@ parse_int:
                break;
 
        case oLocalForward:
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing argument.", filename, linenum);
-               if (cp[0] < '0' || cp[0] > '9')
+               if (arg[0] < '0' || arg[0] > '9')
                        fatal("%.200s line %d: Badly formatted port number.",
                              filename, linenum);
-               fwd_port = atoi(cp);
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               fwd_port = atoi(arg);
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing second argument.",
                              filename, linenum);
-               if (sscanf(cp, "%255[^:]:%hu", buf, &fwd_host_port) != 2)
+               if (sscanf(arg, "%255[^:]:%hu", buf, &fwd_host_port) != 2)
                        fatal("%.200s line %d: Badly formatted host:port.",
                              filename, linenum);
                if (*activep)
@@ -543,26 +552,26 @@ parse_int:
 
        case oHost:
                *activep = 0;
-               while ((cp = strtok(NULL, WHITESPACE)) != NULL)
-                       if (match_pattern(host, cp)) {
-                               debug("Applying options for %.100s", cp);
+               while ((arg = strdelim(&s)) != NULL && *arg != '\0')
+                       if (match_pattern(host, arg)) {
+                               debug("Applying options for %.100s", arg);
                                *activep = 1;
                                break;
                        }
-               /* Avoid garbage check below, as strtok already returned NULL. */
+               /* Avoid garbage check below, as strdelim is done. */
                return 0;
 
        case oEscapeChar:
                intptr = &options->escape_char;
-               cp = strtok(NULL, WHITESPACE);
-               if (!cp)
+               arg = strdelim(&s);
+               if (!arg || *arg == '\0')
                        fatal("%.200s line %d: Missing argument.", filename, linenum);
-               if (cp[0] == '^' && cp[2] == 0 &&
-                   (unsigned char) cp[1] >= 64 && (unsigned char) cp[1] < 128)
-                       value = (unsigned char) cp[1] & 31;
-               else if (strlen(cp) == 1)
-                       value = (unsigned char) cp[0];
-               else if (strcmp(cp, "none") == 0)
+               if (arg[0] == '^' && arg[2] == 0 &&
+                   (unsigned char) arg[1] >= 64 && (unsigned char) arg[1] < 128)
+                       value = (unsigned char) arg[1] & 31;
+               else if (strlen(arg) == 1)
+                       value = (unsigned char) arg[0];
+               else if (strcmp(arg, "none") == 0)
                        value = -2;
                else {
                        fatal("%.200s line %d: Bad escape character.",
@@ -579,9 +588,11 @@ parse_int:
        }
 
        /* Check that there is no garbage at end of line. */
-       if (strtok(NULL, WHITESPACE) != NULL)
-               fatal("%.200s line %d: garbage at end of line.",
-                     filename, linenum);
+       if ((arg = strdelim(&s)) != NULL && *arg != '\0')
+       {
+               fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
+                     filename, linenum, arg);
+       }
        return 0;
 }
 
@@ -638,6 +649,7 @@ initialize_options(Options * options)
        memset(options, 'X', sizeof(*options));
        options->forward_agent = -1;
        options->forward_x11 = -1;
+       options->xauth_location = NULL;
        options->gateway_ports = -1;
        options->use_privileged_port = -1;
        options->rhosts_authentication = -1;
@@ -691,9 +703,13 @@ void
 fill_default_options(Options * options)
 {
        if (options->forward_agent == -1)
-               options->forward_agent = 1;
+               options->forward_agent = 0;
        if (options->forward_x11 == -1)
                options->forward_x11 = 0;
+#ifdef XAUTH_PATH
+       if (options->xauth_location == NULL)
+               options->xauth_location = XAUTH_PATH;
+#endif /* XAUTH_PATH */
        if (options->gateway_ports == -1)
                options->gateway_ports = 0;
        if (options->use_privileged_port == -1)
@@ -721,7 +737,7 @@ fill_default_options(Options * options)
        if (options->rhosts_rsa_authentication == -1)
                options->rhosts_rsa_authentication = 1;
        if (options->fallback_to_rsh == -1)
-               options->fallback_to_rsh = 1;
+               options->fallback_to_rsh = 0;
        if (options->use_rsh == -1)
                options->use_rsh = 0;
        if (options->batch_mode == -1)
@@ -745,6 +761,7 @@ fill_default_options(Options * options)
        /* Selected in ssh_login(). */
        if (options->cipher == -1)
                options->cipher = SSH_CIPHER_NOT_SET;
+       /* options->ciphers, default set in myproposals.h */
        if (options->protocol == SSH_PROTO_UNKNOWN)
                options->protocol = SSH_PROTO_1|SSH_PROTO_2|SSH_PROTO_1_PREFERRED;
        if (options->num_identity_files == 0) {
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