diff options
Diffstat (limited to 'crypto/openssh/readconf.c')
| -rw-r--r-- | crypto/openssh/readconf.c | 834 |
1 files changed, 834 insertions, 0 deletions
diff --git a/crypto/openssh/readconf.c b/crypto/openssh/readconf.c new file mode 100644 index 0000000..87f5bc9 --- /dev/null +++ b/crypto/openssh/readconf.c @@ -0,0 +1,834 @@ +/* + * Author: Tatu Ylonen <ylo@cs.hut.fi> + * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland + * All rights reserved + * Functions for reading the configuration files. + * + * As far as I am concerned, the code I have written for this software + * can be used freely for any purpose. Any derived versions of this + * software must be clearly marked as such, and if the derived work is + * incompatible with the protocol description in the RFC file, it must be + * called by a name other than "ssh" or "Secure Shell". + */ + +#include "includes.h" +RCSID("$OpenBSD: readconf.c,v 1.49 2000/10/11 20:27:23 markus Exp $"); +RCSID("$FreeBSD$"); + +#include "ssh.h" +#include "readconf.h" +#include "match.h" +#include "xmalloc.h" +#include "compat.h" + +/* Format of the configuration file: + + # Configuration data is parsed as follows: + # 1. command line options + # 2. user-specific file + # 3. system-wide file + # Any configuration value is only changed the first time it is set. + # Thus, host-specific definitions should be at the beginning of the + # configuration file, and defaults at the end. + + # Host-specific declarations. These may override anything above. A single + # host may match multiple declarations; these are processed in the order + # that they are given in. + + Host *.ngs.fi ngs.fi + FallBackToRsh no + + Host fake.com + HostName another.host.name.real.org + User blaah + Port 34289 + ForwardX11 no + ForwardAgent no + + Host books.com + RemoteForward 9999 shadows.cs.hut.fi:9999 + Cipher 3des + + Host fascist.blob.com + Port 23123 + User tylonen + RhostsAuthentication no + PasswordAuthentication no + + Host puukko.hut.fi + User t35124p + ProxyCommand ssh-proxy %h %p + + Host *.fr + UseRsh yes + + Host *.su + Cipher none + PasswordAuthentication no + + # Defaults for various options + Host * + ForwardAgent no + ForwardX11 yes + RhostsAuthentication yes + PasswordAuthentication yes + RSAAuthentication yes + RhostsRSAAuthentication yes + FallBackToRsh no + UseRsh no + StrictHostKeyChecking yes + KeepAlives no + IdentityFile ~/.ssh/identity + Port 22 + EscapeChar ~ + +*/ + +/* Keyword tokens. */ + +typedef enum { + oBadOption, + oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication, + oPasswordAuthentication, oRSAAuthentication, oFallBackToRsh, oUseRsh, + oSkeyAuthentication, oXAuthLocation, +#ifdef KRB4 + oKrb4Authentication, +#endif /* KRB4 */ +#ifdef KRB5 + oKrb5Authentication, oKrb5TgtPassing, +#endif /* KRB5 */ +#ifdef AFS + oKrb4TgtPassing, oAFSTokenPassing, +#endif + oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward, + oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand, + oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts, + oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression, + oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, oTISAuthentication, + oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oIdentityFile2, + oGlobalKnownHostsFile2, oUserKnownHostsFile2, oDSAAuthentication, + oKbdInteractiveAuthentication, oKbdInteractiveDevices +} OpCodes; + +/* Textual representations of the tokens. */ + +static struct { + const char *name; + OpCodes opcode; +} keywords[] = { + { "forwardagent", oForwardAgent }, + { "forwardx11", oForwardX11 }, + { "xauthlocation", oXAuthLocation }, + { "gatewayports", oGatewayPorts }, + { "useprivilegedport", oUsePrivilegedPort }, + { "rhostsauthentication", oRhostsAuthentication }, + { "passwordauthentication", oPasswordAuthentication }, + { "kbdinteractiveauthentication", oKbdInteractiveAuthentication }, + { "kbdinteractivedevices", oKbdInteractiveDevices }, + { "rsaauthentication", oRSAAuthentication }, + { "dsaauthentication", oDSAAuthentication }, + { "skeyauthentication", oSkeyAuthentication }, +#ifdef KRB4 + { "kerberos4authentication", oKrb4Authentication }, +#endif /* KRB4 */ +#ifdef KRB5 + { "kerberos5authentication", oKrb5Authentication }, + { "kerberos5tgtpassing", oKrb5TgtPassing }, +#endif /* KRB5 */ +#ifdef AFS + { "kerberos4tgtpassing", oKrb4TgtPassing }, + { "afstokenpassing", oAFSTokenPassing }, +#endif + { "fallbacktorsh", oFallBackToRsh }, + { "usersh", oUseRsh }, + { "identityfile", oIdentityFile }, + { "identityfile2", oIdentityFile2 }, + { "hostname", oHostName }, + { "proxycommand", oProxyCommand }, + { "port", oPort }, + { "cipher", oCipher }, + { "ciphers", oCiphers }, + { "protocol", oProtocol }, + { "remoteforward", oRemoteForward }, + { "localforward", oLocalForward }, + { "user", oUser }, + { "host", oHost }, + { "escapechar", oEscapeChar }, + { "rhostsrsaauthentication", oRhostsRSAAuthentication }, + { "globalknownhostsfile", oGlobalKnownHostsFile }, + { "userknownhostsfile", oUserKnownHostsFile }, + { "globalknownhostsfile2", oGlobalKnownHostsFile2 }, + { "userknownhostsfile2", oUserKnownHostsFile2 }, + { "connectionattempts", oConnectionAttempts }, + { "batchmode", oBatchMode }, + { "checkhostip", oCheckHostIP }, + { "stricthostkeychecking", oStrictHostKeyChecking }, + { "compression", oCompression }, + { "compressionlevel", oCompressionLevel }, + { "keepalive", oKeepAlives }, + { "numberofpasswordprompts", oNumberOfPasswordPrompts }, + { "tisauthentication", oTISAuthentication }, + { "loglevel", oLogLevel }, + { NULL, 0 } +}; + +/* + * Adds a local TCP/IP port forward to options. Never returns if there is an + * error. + */ + +void +add_local_forward(Options *options, u_short port, const char *host, + u_short host_port) +{ + Forward *fwd; + extern uid_t original_real_uid; + if (port < IPPORT_RESERVED && original_real_uid != 0) + fatal("Privileged ports can only be forwarded by root.\n"); + if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) + fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION); + fwd = &options->local_forwards[options->num_local_forwards++]; + fwd->port = port; + fwd->host = xstrdup(host); + fwd->host_port = host_port; +} + +/* + * Adds a remote TCP/IP port forward to options. Never returns if there is + * an error. + */ + +void +add_remote_forward(Options *options, u_short port, const char *host, + u_short host_port) +{ + Forward *fwd; + if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) + fatal("Too many remote forwards (max %d).", + SSH_MAX_FORWARDS_PER_DIRECTION); + fwd = &options->remote_forwards[options->num_remote_forwards++]; + fwd->port = port; + fwd->host = xstrdup(host); + fwd->host_port = host_port; +} + +/* + * Returns the number of the token pointed to by cp of length len. Never + * returns if the token is not known. + */ + +static OpCodes +parse_token(const char *cp, const char *filename, int linenum) +{ + unsigned int i; + + for (i = 0; keywords[i].name; i++) + if (strcasecmp(cp, keywords[i].name) == 0) + return keywords[i].opcode; + + fprintf(stderr, "%s: line %d: Bad configuration option: %s\n", + filename, linenum, cp); + return oBadOption; +} + +/* + * Processes a single option line as used in the configuration files. This + * only sets those values that have not already been set. + */ + +int +process_config_line(Options *options, const char *host, + char *line, const char *filename, int linenum, + int *activep) +{ + char buf[256], *s, *string, **charptr, *endofnumber, *keyword, *arg; + int opcode, *intptr, value; + u_short fwd_port, fwd_host_port; + + 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; + + opcode = parse_token(keyword, filename, linenum); + + switch (opcode) { + case oBadOption: + /* don't panic, but count bad options */ + return -1; + /* NOTREACHED */ + case oForwardAgent: + intptr = &options->forward_agent; +parse_flag: + 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(arg, "yes") == 0 || strcmp(arg, "true") == 0) + value = 1; + else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) + value = 0; + else + fatal("%.200s line %d: Bad yes/no argument.", filename, linenum); + if (*activep && *intptr == -1) + *intptr = value; + break; + + case oForwardX11: + intptr = &options->forward_x11; + goto parse_flag; + + case oGatewayPorts: + intptr = &options->gateway_ports; + goto parse_flag; + + case oUsePrivilegedPort: + intptr = &options->use_privileged_port; + goto parse_flag; + + case oRhostsAuthentication: + intptr = &options->rhosts_authentication; + goto parse_flag; + + case oPasswordAuthentication: + intptr = &options->password_authentication; + goto parse_flag; + + case oKbdInteractiveAuthentication: + intptr = &options->kbd_interactive_authentication; + goto parse_flag; + + case oKbdInteractiveDevices: + charptr = &options->kbd_interactive_devices; + goto parse_string; + + case oDSAAuthentication: + intptr = &options->dsa_authentication; + goto parse_flag; + + case oRSAAuthentication: + intptr = &options->rsa_authentication; + goto parse_flag; + + case oRhostsRSAAuthentication: + intptr = &options->rhosts_rsa_authentication; + goto parse_flag; + + case oTISAuthentication: + /* fallthrough, there is no difference on the client side */ + case oSkeyAuthentication: + intptr = &options->skey_authentication; + goto parse_flag; + +#ifdef KRB4 + case oKrb4Authentication: + intptr = &options->krb4_authentication; + goto parse_flag; +#endif /* KRB4 */ + +#ifdef KRB5 + case oKrb5Authentication: + intptr = &options->krb5_authentication; + goto parse_flag; + + case oKrb5TgtPassing: + intptr = &options->krb5_tgt_passing; + goto parse_flag; +#endif /* KRB5 */ + +#ifdef AFS + case oKrb4TgtPassing: + intptr = &options->krb4_tgt_passing; + goto parse_flag; + + case oAFSTokenPassing: + intptr = &options->afs_token_passing; + goto parse_flag; +#endif + + case oFallBackToRsh: + intptr = &options->fallback_to_rsh; + goto parse_flag; + + case oUseRsh: + intptr = &options->use_rsh; + goto parse_flag; + + case oBatchMode: + intptr = &options->batch_mode; + goto parse_flag; + + case oCheckHostIP: + intptr = &options->check_host_ip; + goto parse_flag; + + case oStrictHostKeyChecking: + intptr = &options->strict_host_key_checking; + 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(arg, "yes") == 0 || strcmp(arg, "true") == 0) + value = 1; + else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) + value = 0; + else if (strcmp(arg, "ask") == 0) + value = 2; + else + fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum); + if (*activep && *intptr == -1) + *intptr = value; + break; + + case oCompression: + intptr = &options->compression; + goto parse_flag; + + case oKeepAlives: + intptr = &options->keepalives; + goto parse_flag; + + case oNumberOfPasswordPrompts: + intptr = &options->number_of_password_prompts; + goto parse_int; + + case oCompressionLevel: + intptr = &options->compression_level; + goto parse_int; + + case oIdentityFile: + case oIdentityFile2: + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%.200s line %d: Missing argument.", filename, linenum); + if (*activep) { + intptr = (opcode == oIdentityFile) ? + &options->num_identity_files : + &options->num_identity_files2; + if (*intptr >= SSH_MAX_IDENTITY_FILES) + fatal("%.200s line %d: Too many identity files specified (max %d).", + filename, linenum, SSH_MAX_IDENTITY_FILES); + charptr = (opcode == oIdentityFile) ? + &options->identity_files[*intptr] : + &options->identity_files2[*intptr]; + *charptr = xstrdup(arg); + *intptr = *intptr + 1; + } + break; + + case oXAuthLocation: + charptr=&options->xauth_location; + goto parse_string; + + case oUser: + charptr = &options->user; +parse_string: + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%.200s line %d: Missing argument.", filename, linenum); + if (*activep && *charptr == NULL) + *charptr = xstrdup(arg); + break; + + case oGlobalKnownHostsFile: + charptr = &options->system_hostfile; + goto parse_string; + + case oUserKnownHostsFile: + charptr = &options->user_hostfile; + goto parse_string; + + case oGlobalKnownHostsFile2: + charptr = &options->system_hostfile2; + goto parse_string; + + case oUserKnownHostsFile2: + charptr = &options->user_hostfile2; + goto parse_string; + + case oHostName: + charptr = &options->hostname; + goto parse_string; + + case oProxyCommand: + charptr = &options->proxy_command; + string = xstrdup(""); + while ((arg = strdelim(&s)) != NULL && *arg != '\0') { + string = xrealloc(string, strlen(string) + strlen(arg) + 2); + strcat(string, " "); + strcat(string, arg); + } + if (*activep && *charptr == NULL) + *charptr = string; + else + xfree(string); + return 0; + + case oPort: + intptr = &options->port; +parse_int: + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%.200s line %d: Missing argument.", filename, linenum); + if (arg[0] < '0' || arg[0] > '9') + fatal("%.200s line %d: Bad number.", filename, linenum); + + /* Octal, decimal, or hex format? */ + value = strtol(arg, &endofnumber, 0); + if (arg == endofnumber) + fatal("%.200s line %d: Bad number.", filename, linenum); + if (*activep && *intptr == -1) + *intptr = value; + break; + + case oConnectionAttempts: + intptr = &options->connection_attempts; + goto parse_int; + + case oCipher: + intptr = &options->cipher; + 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, arg ? arg : "<NONE>"); + if (*activep && *intptr == -1) + *intptr = value; + break; + + case oCiphers: + 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(arg); + break; + + case oProtocol: + intptr = &options->protocol; + 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, arg ? arg : "<NONE>"); + if (*activep && *intptr == SSH_PROTO_UNKNOWN) + *intptr = value; + break; + + case oLogLevel: + intptr = (int *) &options->log_level; + arg = strdelim(&s); + value = log_level_number(arg); + if (value == (LogLevel) - 1) + fatal("%.200s line %d: unsupported log level '%s'\n", + filename, linenum, arg ? arg : "<NONE>"); + if (*activep && (LogLevel) * intptr == -1) + *intptr = (LogLevel) value; + break; + + case oRemoteForward: + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%.200s line %d: Missing argument.", filename, linenum); + if (arg[0] < '0' || arg[0] > '9') + fatal("%.200s line %d: Badly formatted port number.", + filename, linenum); + fwd_port = atoi(arg); + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%.200s line %d: Missing second argument.", + filename, linenum); + if (sscanf(arg, "%255[^:]:%hu", buf, &fwd_host_port) != 2) + fatal("%.200s line %d: Badly formatted host:port.", + filename, linenum); + if (*activep) + add_remote_forward(options, fwd_port, buf, fwd_host_port); + break; + + case oLocalForward: + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%.200s line %d: Missing argument.", filename, linenum); + if (arg[0] < '0' || arg[0] > '9') + fatal("%.200s line %d: Badly formatted port number.", + filename, linenum); + fwd_port = atoi(arg); + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%.200s line %d: Missing second argument.", + filename, linenum); + if (sscanf(arg, "%255[^:]:%hu", buf, &fwd_host_port) != 2) + fatal("%.200s line %d: Badly formatted host:port.", + filename, linenum); + if (*activep) + add_local_forward(options, fwd_port, buf, fwd_host_port); + break; + + case oHost: + *activep = 0; + 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 strdelim is done. */ + return 0; + + case oEscapeChar: + intptr = &options->escape_char; + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%.200s line %d: Missing argument.", filename, linenum); + 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.", + filename, linenum); + /* NOTREACHED */ + value = 0; /* Avoid compiler warning. */ + } + if (*activep && *intptr == -1) + *intptr = value; + break; + + default: + fatal("process_config_line: Unimplemented opcode %d", opcode); + } + + /* Check that there is no garbage at end of line. */ + if ((arg = strdelim(&s)) != NULL && *arg != '\0') + { + fatal("%.200s line %d: garbage at end of line; \"%.200s\".", + filename, linenum, arg); + } + return 0; +} + + +/* + * Reads the config file and modifies the options accordingly. Options + * should already be initialized before this call. This never returns if + * there is an error. If the file does not exist, this returns immediately. + */ + +void +read_config_file(const char *filename, const char *host, Options *options) +{ + FILE *f; + char line[1024]; + int active, linenum; + int bad_options = 0; + + /* Open the file. */ + f = fopen(filename, "r"); + if (!f) + return; + + debug("Reading configuration data %.200s", filename); + + /* + * Mark that we are now processing the options. This flag is turned + * on/off by Host specifications. + */ + active = 1; + linenum = 0; + while (fgets(line, sizeof(line), f)) { + /* Update line number counter. */ + linenum++; + if (process_config_line(options, host, line, filename, linenum, &active) != 0) + bad_options++; + } + fclose(f); + if (bad_options > 0) + fatal("%s: terminating, %d bad configuration options\n", + filename, bad_options); +} + +/* + * Initializes options to special values that indicate that they have not yet + * been set. Read_config_file will only set options with this value. Options + * are processed in the following order: command line, user config file, + * system config file. Last, fill_default_options is called. + */ + +void +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; + options->rsa_authentication = -1; + options->dsa_authentication = -1; + options->skey_authentication = -1; +#ifdef KRB4 + options->krb4_authentication = -1; +#endif +#ifdef KRB5 + options->krb5_authentication = -1; + options->krb5_tgt_passing = -1; +#endif /* KRB5 */ +#ifdef AFS + options->krb4_tgt_passing = -1; + options->afs_token_passing = -1; +#endif + options->password_authentication = -1; + options->kbd_interactive_authentication = -1; + options->kbd_interactive_devices = NULL; + options->rhosts_rsa_authentication = -1; + options->fallback_to_rsh = -1; + options->use_rsh = -1; + options->batch_mode = -1; + options->check_host_ip = -1; + options->strict_host_key_checking = -1; + options->compression = -1; + options->keepalives = -1; + options->compression_level = -1; + options->port = -1; + options->connection_attempts = -1; + options->number_of_password_prompts = -1; + options->cipher = -1; + options->ciphers = NULL; + options->protocol = SSH_PROTO_UNKNOWN; + options->num_identity_files = 0; + options->num_identity_files2 = 0; + options->hostname = NULL; + options->proxy_command = NULL; + options->user = NULL; + options->escape_char = -1; + options->system_hostfile = NULL; + options->user_hostfile = NULL; + options->system_hostfile2 = NULL; + options->user_hostfile2 = NULL; + options->num_local_forwards = 0; + options->num_remote_forwards = 0; + options->log_level = (LogLevel) - 1; +} + +/* + * Called after processing other sources of option data, this fills those + * options for which no value has been specified with their default values. + */ + +void +fill_default_options(Options * options) +{ + if (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) + options->use_privileged_port = 1; + if (options->rhosts_authentication == -1) + options->rhosts_authentication = 1; + if (options->rsa_authentication == -1) + options->rsa_authentication = 1; + if (options->dsa_authentication == -1) + options->dsa_authentication = 1; + if (options->skey_authentication == -1) + options->skey_authentication = 0; +#ifdef KRB4 + if (options->krb4_authentication == -1) + options->krb4_authentication = 1; +#endif /* KRB4 */ +#ifdef KRB5 + if (options->krb5_authentication == -1) + options->krb5_authentication = 1; + if (options->krb5_tgt_passing == -1) + options->krb5_tgt_passing = 1; +#endif /* KRB5 */ +#ifdef AFS + if (options->krb4_tgt_passing == -1) + options->krb4_tgt_passing = 1; + if (options->afs_token_passing == -1) + options->afs_token_passing = 1; +#endif /* AFS */ + if (options->password_authentication == -1) + options->password_authentication = 1; + if (options->kbd_interactive_authentication == -1) + options->kbd_interactive_authentication = 0; + if (options->rhosts_rsa_authentication == -1) + options->rhosts_rsa_authentication = 1; + if (options->fallback_to_rsh == -1) + options->fallback_to_rsh = 0; + if (options->use_rsh == -1) + options->use_rsh = 0; + if (options->batch_mode == -1) + options->batch_mode = 0; + if (options->check_host_ip == -1) + options->check_host_ip = 0; + if (options->strict_host_key_checking == -1) + options->strict_host_key_checking = 2; /* 2 is default */ + if (options->compression == -1) + options->compression = 0; + if (options->keepalives == -1) + options->keepalives = 1; + if (options->compression_level == -1) + options->compression_level = 6; + if (options->port == -1) + options->port = 0; /* Filled in ssh_connect. */ + if (options->connection_attempts == -1) + options->connection_attempts = 4; + if (options->number_of_password_prompts == -1) + options->number_of_password_prompts = 3; + /* 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) { + options->identity_files[0] = + xmalloc(2 + strlen(SSH_CLIENT_IDENTITY) + 1); + sprintf(options->identity_files[0], "~/%.100s", SSH_CLIENT_IDENTITY); + options->num_identity_files = 1; + } + if (options->num_identity_files2 == 0) { + options->identity_files2[0] = + xmalloc(2 + strlen(SSH_CLIENT_ID_DSA) + 1); + sprintf(options->identity_files2[0], "~/%.100s", SSH_CLIENT_ID_DSA); + options->num_identity_files2 = 1; + } + if (options->escape_char == -1) + options->escape_char = '~'; + if (options->system_hostfile == NULL) + options->system_hostfile = SSH_SYSTEM_HOSTFILE; + if (options->user_hostfile == NULL) + options->user_hostfile = SSH_USER_HOSTFILE; + if (options->system_hostfile2 == NULL) + options->system_hostfile2 = SSH_SYSTEM_HOSTFILE2; + if (options->user_hostfile2 == NULL) + options->user_hostfile2 = SSH_USER_HOSTFILE2; + if (options->log_level == (LogLevel) - 1) + options->log_level = SYSLOG_LEVEL_INFO; + /* options->proxy_command should not be set by default */ + /* options->user will be set in the main program if appropriate */ + /* options->hostname will be set in the main program if appropriate */ +} |
