version 1.40, 2000/05/08 17:12:15 |
version 1.40.2.2, 2000/09/01 18:23:22 |
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*/ |
*/ |
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#include "includes.h" |
#include "includes.h" |
RCSID("$Id$"); |
RCSID("$OpenBSD$"); |
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#include "ssh.h" |
#include "ssh.h" |
#include "servconf.h" |
#include "servconf.h" |
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options->check_mail = -1; |
options->check_mail = -1; |
options->x11_forwarding = -1; |
options->x11_forwarding = -1; |
options->x11_display_offset = -1; |
options->x11_display_offset = -1; |
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options->xauth_location = NULL; |
options->strict_modes = -1; |
options->strict_modes = -1; |
options->keepalives = -1; |
options->keepalives = -1; |
options->log_facility = (SyslogFacility) - 1; |
options->log_facility = (SyslogFacility) - 1; |
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options->ciphers = NULL; |
options->ciphers = NULL; |
options->protocol = SSH_PROTO_UNKNOWN; |
options->protocol = SSH_PROTO_UNKNOWN; |
options->gateway_ports = -1; |
options->gateway_ports = -1; |
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options->num_subsystems = 0; |
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options->max_startups_begin = -1; |
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options->max_startups_rate = -1; |
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options->max_startups = -1; |
} |
} |
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void |
void |
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options->x11_forwarding = 0; |
options->x11_forwarding = 0; |
if (options->x11_display_offset == -1) |
if (options->x11_display_offset == -1) |
options->x11_display_offset = 10; |
options->x11_display_offset = 10; |
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#ifdef XAUTH_PATH |
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if (options->xauth_location == NULL) |
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options->xauth_location = XAUTH_PATH; |
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#endif /* XAUTH_PATH */ |
if (options->strict_modes == -1) |
if (options->strict_modes == -1) |
options->strict_modes = 1; |
options->strict_modes = 1; |
if (options->keepalives == -1) |
if (options->keepalives == -1) |
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options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
if (options->gateway_ports == -1) |
if (options->gateway_ports == -1) |
options->gateway_ports = 0; |
options->gateway_ports = 0; |
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if (options->max_startups == -1) |
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options->max_startups = 10; |
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if (options->max_startups_rate == -1) |
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options->max_startups_rate = 100; /* 100% */ |
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if (options->max_startups_begin == -1) |
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options->max_startups_begin = options->max_startups; |
} |
} |
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#define WHITESPACE " \t\r\n" |
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/* Keyword tokens. */ |
/* Keyword tokens. */ |
typedef enum { |
typedef enum { |
sBadOption, /* == unknown option */ |
sBadOption, /* == unknown option */ |
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sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail, |
sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail, |
sUseLogin, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
sUseLogin, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
sIgnoreUserKnownHosts, sHostDSAKeyFile, sCiphers, sProtocol, sPidFile, |
sIgnoreUserKnownHosts, sHostDSAKeyFile, sCiphers, sProtocol, sPidFile, |
sGatewayPorts, sDSAAuthentication |
sGatewayPorts, sDSAAuthentication, sXAuthLocation, sSubsystem, sMaxStartups |
} ServerOpCodes; |
} ServerOpCodes; |
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/* Textual representation of the tokens. */ |
/* Textual representation of the tokens. */ |
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{ "ignoreuserknownhosts", sIgnoreUserKnownHosts }, |
{ "ignoreuserknownhosts", sIgnoreUserKnownHosts }, |
{ "x11forwarding", sX11Forwarding }, |
{ "x11forwarding", sX11Forwarding }, |
{ "x11displayoffset", sX11DisplayOffset }, |
{ "x11displayoffset", sX11DisplayOffset }, |
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{ "xauthlocation", sXAuthLocation }, |
{ "strictmodes", sStrictModes }, |
{ "strictmodes", sStrictModes }, |
{ "permitemptypasswords", sEmptyPasswd }, |
{ "permitemptypasswords", sEmptyPasswd }, |
{ "uselogin", sUseLogin }, |
{ "uselogin", sUseLogin }, |
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{ "ciphers", sCiphers }, |
{ "ciphers", sCiphers }, |
{ "protocol", sProtocol }, |
{ "protocol", sProtocol }, |
{ "gatewayports", sGatewayPorts }, |
{ "gatewayports", sGatewayPorts }, |
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{ "subsystem", sSubsystem }, |
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{ "maxstartups", sMaxStartups }, |
{ NULL, 0 } |
{ NULL, 0 } |
}; |
}; |
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{ |
{ |
FILE *f; |
FILE *f; |
char line[1024]; |
char line[1024]; |
char *cp, **charptr; |
char *cp, **charptr, *arg; |
int linenum, *intptr, value; |
int linenum, *intptr, value; |
int bad_options = 0; |
int bad_options = 0; |
ServerOpCodes opcode; |
ServerOpCodes opcode; |
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int i; |
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f = fopen(filename, "r"); |
f = fopen(filename, "r"); |
if (!f) { |
if (!f) { |
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linenum = 0; |
linenum = 0; |
while (fgets(line, sizeof(line), f)) { |
while (fgets(line, sizeof(line), f)) { |
linenum++; |
linenum++; |
cp = line + strspn(line, WHITESPACE); |
cp = line; |
if (!*cp || *cp == '#') |
arg = strdelim(&cp); |
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/* Ignore leading whitespace */ |
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if (*arg == '\0') |
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arg = strdelim(&cp); |
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if (!*arg || *arg == '#') |
continue; |
continue; |
cp = strtok(cp, WHITESPACE); |
opcode = parse_token(arg, filename, linenum); |
opcode = parse_token(cp, filename, linenum); |
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switch (opcode) { |
switch (opcode) { |
case sBadOption: |
case sBadOption: |
bad_options++; |
bad_options++; |
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if (options->num_ports >= MAX_PORTS) |
if (options->num_ports >= MAX_PORTS) |
fatal("%s line %d: too many ports.\n", |
fatal("%s line %d: too many ports.\n", |
filename, linenum); |
filename, linenum); |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) |
if (!arg || *arg == '\0') |
fatal("%s line %d: missing port number.\n", |
fatal("%s line %d: missing port number.\n", |
filename, linenum); |
filename, linenum); |
options->ports[options->num_ports++] = atoi(cp); |
options->ports[options->num_ports++] = atoi(arg); |
break; |
break; |
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case sServerKeyBits: |
case sServerKeyBits: |
intptr = &options->server_key_bits; |
intptr = &options->server_key_bits; |
parse_int: |
parse_int: |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) { |
if (!arg || *arg == '\0') { |
fprintf(stderr, "%s line %d: missing integer value.\n", |
fprintf(stderr, "%s line %d: missing integer value.\n", |
filename, linenum); |
filename, linenum); |
exit(1); |
exit(1); |
} |
} |
value = atoi(cp); |
value = atoi(arg); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = value; |
*intptr = value; |
break; |
break; |
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goto parse_int; |
goto parse_int; |
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case sListenAddress: |
case sListenAddress: |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) |
if (!arg || *arg == '\0') |
fatal("%s line %d: missing inet addr.\n", |
fatal("%s line %d: missing inet addr.\n", |
filename, linenum); |
filename, linenum); |
add_listen_addr(options, cp); |
add_listen_addr(options, arg); |
break; |
break; |
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case sHostKeyFile: |
case sHostKeyFile: |
case sHostDSAKeyFile: |
case sHostDSAKeyFile: |
charptr = (opcode == sHostKeyFile ) ? |
charptr = (opcode == sHostKeyFile ) ? |
&options->host_key_file : &options->host_dsa_key_file; |
&options->host_key_file : &options->host_dsa_key_file; |
cp = strtok(NULL, WHITESPACE); |
parse_filename: |
if (!cp) { |
arg = strdelim(&cp); |
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if (!arg || *arg == '\0') { |
fprintf(stderr, "%s line %d: missing file name.\n", |
fprintf(stderr, "%s line %d: missing file name.\n", |
filename, linenum); |
filename, linenum); |
exit(1); |
exit(1); |
} |
} |
if (*charptr == NULL) |
if (*charptr == NULL) |
*charptr = tilde_expand_filename(cp, getuid()); |
*charptr = tilde_expand_filename(arg, getuid()); |
break; |
break; |
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case sPidFile: |
case sPidFile: |
charptr = &options->pid_file; |
charptr = &options->pid_file; |
cp = strtok(NULL, WHITESPACE); |
goto parse_filename; |
if (!cp) { |
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fprintf(stderr, "%s line %d: missing file name.\n", |
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filename, linenum); |
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exit(1); |
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} |
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if (*charptr == NULL) |
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*charptr = tilde_expand_filename(cp, getuid()); |
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break; |
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case sRandomSeedFile: |
case sRandomSeedFile: |
fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n", |
fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n", |
filename, linenum); |
filename, linenum); |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
break; |
break; |
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case sPermitRootLogin: |
case sPermitRootLogin: |
intptr = &options->permit_root_login; |
intptr = &options->permit_root_login; |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) { |
if (!arg || *arg == '\0') { |
fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n", |
fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n", |
filename, linenum); |
filename, linenum); |
exit(1); |
exit(1); |
} |
} |
if (strcmp(cp, "without-password") == 0) |
if (strcmp(arg, "without-password") == 0) |
value = 2; |
value = 2; |
else if (strcmp(cp, "yes") == 0) |
else if (strcmp(arg, "yes") == 0) |
value = 1; |
value = 1; |
else if (strcmp(cp, "no") == 0) |
else if (strcmp(arg, "no") == 0) |
value = 0; |
value = 0; |
else { |
else { |
fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n", |
fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n", |
filename, linenum, cp); |
filename, linenum, arg); |
exit(1); |
exit(1); |
} |
} |
if (*intptr == -1) |
if (*intptr == -1) |
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case sIgnoreRhosts: |
case sIgnoreRhosts: |
intptr = &options->ignore_rhosts; |
intptr = &options->ignore_rhosts; |
parse_flag: |
parse_flag: |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) { |
if (!arg || *arg == '\0') { |
fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
filename, linenum); |
filename, linenum); |
exit(1); |
exit(1); |
} |
} |
if (strcmp(cp, "yes") == 0) |
if (strcmp(arg, "yes") == 0) |
value = 1; |
value = 1; |
else if (strcmp(cp, "no") == 0) |
else if (strcmp(arg, "no") == 0) |
value = 0; |
value = 0; |
else { |
else { |
fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", |
fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", |
filename, linenum, cp); |
filename, linenum, arg); |
exit(1); |
exit(1); |
} |
} |
if (*intptr == -1) |
if (*intptr == -1) |
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intptr = &options->x11_display_offset; |
intptr = &options->x11_display_offset; |
goto parse_int; |
goto parse_int; |
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case sXAuthLocation: |
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charptr = &options->xauth_location; |
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goto parse_filename; |
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case sStrictModes: |
case sStrictModes: |
intptr = &options->strict_modes; |
intptr = &options->strict_modes; |
goto parse_flag; |
goto parse_flag; |
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case sLogFacility: |
case sLogFacility: |
intptr = (int *) &options->log_facility; |
intptr = (int *) &options->log_facility; |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
value = log_facility_number(cp); |
value = log_facility_number(arg); |
if (value == (SyslogFacility) - 1) |
if (value == (SyslogFacility) - 1) |
fatal("%.200s line %d: unsupported log facility '%s'\n", |
fatal("%.200s line %d: unsupported log facility '%s'\n", |
filename, linenum, cp ? cp : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = (SyslogFacility) value; |
*intptr = (SyslogFacility) value; |
break; |
break; |
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case sLogLevel: |
case sLogLevel: |
intptr = (int *) &options->log_level; |
intptr = (int *) &options->log_level; |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
value = log_level_number(cp); |
value = log_level_number(arg); |
if (value == (LogLevel) - 1) |
if (value == (LogLevel) - 1) |
fatal("%.200s line %d: unsupported log level '%s'\n", |
fatal("%.200s line %d: unsupported log level '%s'\n", |
filename, linenum, cp ? cp : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = (LogLevel) value; |
*intptr = (LogLevel) value; |
break; |
break; |
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case sAllowUsers: |
case sAllowUsers: |
while ((cp = strtok(NULL, WHITESPACE))) { |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
if (options->num_allow_users >= MAX_ALLOW_USERS) |
if (options->num_allow_users >= MAX_ALLOW_USERS) |
fatal("%s line %d: too many allow users.\n", |
fatal("%s line %d: too many allow users.\n", |
filename, linenum); |
filename, linenum); |
options->allow_users[options->num_allow_users++] = xstrdup(cp); |
options->allow_users[options->num_allow_users++] = xstrdup(arg); |
} |
} |
break; |
break; |
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case sDenyUsers: |
case sDenyUsers: |
while ((cp = strtok(NULL, WHITESPACE))) { |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
if (options->num_deny_users >= MAX_DENY_USERS) |
if (options->num_deny_users >= MAX_DENY_USERS) |
fatal( "%s line %d: too many deny users.\n", |
fatal( "%s line %d: too many deny users.\n", |
filename, linenum); |
filename, linenum); |
options->deny_users[options->num_deny_users++] = xstrdup(cp); |
options->deny_users[options->num_deny_users++] = xstrdup(arg); |
} |
} |
break; |
break; |
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case sAllowGroups: |
case sAllowGroups: |
while ((cp = strtok(NULL, WHITESPACE))) { |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
fatal("%s line %d: too many allow groups.\n", |
fatal("%s line %d: too many allow groups.\n", |
filename, linenum); |
filename, linenum); |
options->allow_groups[options->num_allow_groups++] = xstrdup(cp); |
options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
} |
} |
break; |
break; |
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case sDenyGroups: |
case sDenyGroups: |
while ((cp = strtok(NULL, WHITESPACE))) { |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
if (options->num_deny_groups >= MAX_DENY_GROUPS) |
if (options->num_deny_groups >= MAX_DENY_GROUPS) |
fatal("%s line %d: too many deny groups.\n", |
fatal("%s line %d: too many deny groups.\n", |
filename, linenum); |
filename, linenum); |
options->deny_groups[options->num_deny_groups++] = xstrdup(cp); |
options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
} |
} |
break; |
break; |
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case sCiphers: |
case sCiphers: |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!ciphers_valid(cp)) |
if (!arg || *arg == '\0') |
|
fatal("%s line %d: Missing argument.", filename, linenum); |
|
if (!ciphers_valid(arg)) |
fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
filename, linenum, cp ? cp : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (options->ciphers == NULL) |
if (options->ciphers == NULL) |
options->ciphers = xstrdup(cp); |
options->ciphers = xstrdup(arg); |
break; |
break; |
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case sProtocol: |
case sProtocol: |
intptr = &options->protocol; |
intptr = &options->protocol; |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
value = proto_spec(cp); |
if (!arg || *arg == '\0') |
|
fatal("%s line %d: Missing argument.", filename, linenum); |
|
value = proto_spec(arg); |
if (value == SSH_PROTO_UNKNOWN) |
if (value == SSH_PROTO_UNKNOWN) |
fatal("%s line %d: Bad protocol spec '%s'.", |
fatal("%s line %d: Bad protocol spec '%s'.", |
filename, linenum, cp ? cp : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*intptr == SSH_PROTO_UNKNOWN) |
if (*intptr == SSH_PROTO_UNKNOWN) |
*intptr = value; |
*intptr = value; |
break; |
break; |
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case sSubsystem: |
|
if(options->num_subsystems >= MAX_SUBSYSTEMS) { |
|
fatal("%s line %d: too many subsystems defined.", |
|
filename, linenum); |
|
} |
|
arg = strdelim(&cp); |
|
if (!arg || *arg == '\0') |
|
fatal("%s line %d: Missing subsystem name.", |
|
filename, linenum); |
|
for (i = 0; i < options->num_subsystems; i++) |
|
if(strcmp(arg, options->subsystem_name[i]) == 0) |
|
fatal("%s line %d: Subsystem '%s' already defined.", |
|
filename, linenum, arg); |
|
options->subsystem_name[options->num_subsystems] = xstrdup(arg); |
|
arg = strdelim(&cp); |
|
if (!arg || *arg == '\0') |
|
fatal("%s line %d: Missing subsystem command.", |
|
filename, linenum); |
|
options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
|
options->num_subsystems++; |
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break; |
|
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case sMaxStartups: |
|
arg = strdelim(&cp); |
|
if (!arg || *arg == '\0') |
|
fatal("%s line %d: Missing MaxStartups spec.", |
|
filename, linenum); |
|
if (sscanf(arg, "%d:%d:%d", |
|
&options->max_startups_begin, |
|
&options->max_startups_rate, |
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&options->max_startups) == 3) { |
|
if (options->max_startups_begin > |
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options->max_startups || |
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options->max_startups_rate > 100 || |
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options->max_startups_rate < 1) |
|
fatal("%s line %d: Illegal MaxStartups spec.", |
|
filename, linenum); |
|
break; |
|
} |
|
intptr = &options->max_startups; |
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goto parse_int; |
|
|
default: |
default: |
fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", |
fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", |
filename, linenum, cp, opcode); |
filename, linenum, arg, opcode); |
exit(1); |
exit(1); |
} |
} |
if (strtok(NULL, WHITESPACE) != NULL) { |
if ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
fprintf(stderr, "%s line %d: garbage at end of line.\n", |
fprintf(stderr, |
filename, linenum); |
"%s line %d: garbage at end of line; \"%.200s\".\n", |
|
filename, linenum, arg); |
exit(1); |
exit(1); |
} |
} |
} |
} |