diff options
Diffstat (limited to 'if-options.c')
-rw-r--r-- | if-options.c | 912 |
1 files changed, 912 insertions, 0 deletions
diff --git a/if-options.c b/if-options.c new file mode 100644 index 0000000..88b43d7 --- /dev/null +++ b/if-options.c @@ -0,0 +1,912 @@ +/* + * dhcpcd - DHCP client daemon + * Copyright (c) 2006-2010 Roy Marples <roy@marples.name> + * All rights reserved + + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <sys/utsname.h> + +#include <arpa/inet.h> + +#include <ctype.h> +#include <errno.h> +#include <getopt.h> +#include <paths.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <unistd.h> +#include <time.h> + +#include "config.h" +#include "common.h" +#include "if-options.h" +#include "net.h" +#include "platform.h" + +/* These options only make sense in the config file, so don't use any + valid short options for them */ +#define O_BASE MAX('z', 'Z') + 1 +#define O_ARPING O_BASE + 1 +#define O_FALLBACK O_BASE + 2 +#define O_DESTINATION O_BASE + 3 + +const struct option cf_options[] = { + {"background", no_argument, NULL, 'b'}, + {"script", required_argument, NULL, 'c'}, + {"debug", no_argument, NULL, 'd'}, + {"env", required_argument, NULL, 'e'}, + {"config", required_argument, NULL, 'f'}, + {"reconfigure", no_argument, NULL, 'g'}, + {"hostname", optional_argument, NULL, 'h'}, + {"vendorclassid", optional_argument, NULL, 'i'}, + {"release", no_argument, NULL, 'k'}, + {"leasetime", required_argument, NULL, 'l'}, + {"metric", required_argument, NULL, 'm'}, + {"rebind", no_argument, NULL, 'n'}, + {"option", required_argument, NULL, 'o'}, + {"persistent", no_argument, NULL, 'p'}, + {"quiet", no_argument, NULL, 'q'}, + {"request", optional_argument, NULL, 'r'}, + {"inform", optional_argument, NULL, 's'}, + {"timeout", required_argument, NULL, 't'}, + {"userclass", required_argument, NULL, 'u'}, + {"vendor", required_argument, NULL, 'v'}, + {"waitip", no_argument, NULL, 'w'}, + {"exit", no_argument, NULL, 'x'}, + {"allowinterfaces", required_argument, NULL, 'z'}, + {"reboot", required_argument, NULL, 'y'}, + {"noarp", no_argument, NULL, 'A'}, + {"nobackground", no_argument, NULL, 'B'}, + {"nohook", required_argument, NULL, 'C'}, + {"duid", no_argument, NULL, 'D'}, + {"lastlease", no_argument, NULL, 'E'}, + {"fqdn", optional_argument, NULL, 'F'}, + {"nogateway", no_argument, NULL, 'G'}, + {"xidhwaddr", no_argument, NULL, 'H'}, + {"clientid", optional_argument, NULL, 'I'}, + {"broadcast", no_argument, NULL, 'J'}, + {"nolink", no_argument, NULL, 'K'}, + {"noipv4ll", no_argument, NULL, 'L'}, + {"nooption", optional_argument, NULL, 'O'}, + {"require", required_argument, NULL, 'Q'}, + {"static", required_argument, NULL, 'S'}, + {"test", no_argument, NULL, 'T'}, + {"dumplease", no_argument, NULL, 'U'}, + {"variables", no_argument, NULL, 'V'}, + {"whitelist", required_argument, NULL, 'W'}, + {"blacklist", required_argument, NULL, 'X'}, + {"denyinterfaces", required_argument, NULL, 'Z'}, + {"arping", required_argument, NULL, O_ARPING}, + {"destination", required_argument, NULL, O_DESTINATION}, + {"fallback", required_argument, NULL, O_FALLBACK}, + {NULL, 0, NULL, '\0'} +}; + +static int +atoint(const char *s) +{ + char *t; + long n; + + errno = 0; + n = strtol(s, &t, 0); + if ((errno != 0 && n == 0) || s == t || + (errno == ERANGE && (n == LONG_MAX || n == LONG_MIN))) + { + syslog(LOG_ERR, "`%s' out of range", s); + return -1; + } + + return (int)n; +} + +static char * +add_environ(struct if_options *ifo, const char *value, int uniq) +{ + char **newlist; + char **lst = ifo->environ; + size_t i = 0, l, lv; + char *match = NULL, *p; + + match = xstrdup(value); + p = strchr(match, '='); + if (p) + *p++ = '\0'; + l = strlen(match); + + while (lst && lst[i]) { + if (match && strncmp(lst[i], match, l) == 0) { + if (uniq) { + free(lst[i]); + lst[i] = xstrdup(value); + } else { + /* Append a space and the value to it */ + l = strlen(lst[i]); + lv = strlen(p); + lst[i] = xrealloc(lst[i], l + lv + 2); + lst[i][l] = ' '; + memcpy(lst[i] + l + 1, p, lv); + lst[i][l + lv + 1] = '\0'; + } + free(match); + return lst[i]; + } + i++; + } + + newlist = xrealloc(lst, sizeof(char *) * (i + 2)); + newlist[i] = xstrdup(value); + newlist[i + 1] = NULL; + ifo->environ = newlist; + free(match); + return newlist[i]; +} + +#define parse_string(buf, len, arg) parse_string_hwaddr(buf, len, arg, 0) +static ssize_t +parse_string_hwaddr(char *sbuf, ssize_t slen, const char *str, int clid) +{ + ssize_t l; + const char *p; + int i, punt_last = 0; + char c[4]; + + /* If surrounded by quotes then it's a string */ + if (*str == '"') { + str++; + l = strlen(str); + p = str + l - 1; + if (*p == '"') + punt_last = 1; + } else { + l = hwaddr_aton(NULL, str); + if (l > 1) { + if (l > slen) { + errno = ENOBUFS; + return -1; + } + hwaddr_aton((uint8_t *)sbuf, str); + return l; + } + } + + /* Process escapes */ + l = 0; + /* If processing a string on the clientid, first byte should be + * 0 to indicate a non hardware type */ + if (clid && *str) { + *sbuf++ = 0; + l++; + } + c[3] = '\0'; + while (*str) { + if (++l > slen) { + errno = ENOBUFS; + return -1; + } + if (*str == '\\') { + str++; + switch(*str) { + case '\0': + break; + case 'b': + *sbuf++ = '\b'; + str++; + break; + case 'n': + *sbuf++ = '\n'; + str++; + break; + case 'r': + *sbuf++ = '\r'; + str++; + break; + case 't': + *sbuf++ = '\t'; + str++; + break; + case 'x': + /* Grab a hex code */ + c[1] = '\0'; + for (i = 0; i < 2; i++) { + if (isxdigit((unsigned char)*str) == 0) + break; + c[i] = *str++; + } + if (c[1] != '\0') { + c[2] = '\0'; + *sbuf++ = strtol(c, NULL, 16); + } else + l--; + break; + case '0': + /* Grab an octal code */ + c[2] = '\0'; + for (i = 0; i < 3; i++) { + if (*str < '0' || *str > '7') + break; + c[i] = *str++; + } + if (c[2] != '\0') { + i = strtol(c, NULL, 8); + if (i > 255) + i = 255; + *sbuf ++= i; + } else + l--; + break; + default: + *sbuf++ = *str++; + } + } else + *sbuf++ = *str++; + } + if (punt_last) { + *--sbuf = '\0'; + l--; + } + return l; +} + +static char ** +splitv(int *argc, char **argv, const char *arg) +{ + char **v = argv; + char *o = xstrdup(arg), *p, *t; + + p = o; + while ((t = strsep(&p, ", "))) { + (*argc)++; + v = xrealloc(v, sizeof(char *) * ((*argc))); + v[(*argc) - 1] = xstrdup(t); + } + free(o); + return v; +} + +static int +parse_addr(struct in_addr *addr, struct in_addr *net, const char *arg) +{ + char *p; + int i; + + if (arg == NULL || *arg == '\0') { + if (addr != NULL) + addr->s_addr = 0; + if (net != NULL) + net->s_addr = 0; + return 0; + } + if ((p = strchr(arg, '/')) != NULL) { + *p++ = '\0'; + if (net != NULL && + (sscanf(p, "%d", &i) != 1 || + inet_cidrtoaddr(i, net) != 0)) + { + syslog(LOG_ERR, "`%s' is not a valid CIDR", p); + return -1; + } + } + + if (addr != NULL && inet_aton(arg, addr) == 0) { + syslog(LOG_ERR, "`%s' is not a valid IP address", arg); + return -1; + } + if (p != NULL) + *--p = '/'; + else if (net != NULL) + net->s_addr = get_netmask(addr->s_addr); + return 0; +} + +static int +parse_option(struct if_options *ifo, int opt, const char *arg) +{ + int i; + char *p = NULL, *np; + ssize_t s; + struct in_addr addr, addr2; + struct rt *rt; + + switch(opt) { + case 'f': /* FALLTHROUGH */ + case 'g': /* FALLTHROUGH */ + case 'n': /* FALLTHROUGH */ + case 'x': /* FALLTHROUGH */ + case 'T': /* FALLTHROUGH */ + case 'U': /* We need to handle non interface options */ + break; + case 'b': + ifo->options |= DHCPCD_BACKGROUND; + break; + case 'c': + strlcpy(ifo->script, arg, sizeof(ifo->script)); + break; + case 'd': + ifo->options |= DHCPCD_DEBUG; + break; + case 'e': + add_environ(ifo, arg, 1); + break; + case 'h': + if (arg) { + s = parse_string(ifo->hostname, + HOSTNAME_MAX_LEN, arg); + if (s == -1) { + syslog(LOG_ERR, "hostname: %m"); + return -1; + } + if (s != 0 && ifo->hostname[0] == '.') { + syslog(LOG_ERR, + "hostname cannot begin with ."); + return -1; + } + ifo->hostname[s] = '\0'; + } + if (ifo->hostname[0] == '\0') + ifo->options &= ~DHCPCD_HOSTNAME; + else + ifo->options |= DHCPCD_HOSTNAME; + break; + case 'i': + if (arg) + s = parse_string((char *)ifo->vendorclassid + 1, + VENDORCLASSID_MAX_LEN, arg); + else + s = 0; + if (s == -1) { + syslog(LOG_ERR, "vendorclassid: %m"); + return -1; + } + *ifo->vendorclassid = (uint8_t)s; + break; + case 'k': + ifo->options |= DHCPCD_RELEASE; + break; + case 'l': + if (*arg == '-') { + syslog(LOG_ERR, + "leasetime must be a positive value"); + return -1; + } + errno = 0; + ifo->leasetime = (uint32_t)strtol(arg, NULL, 0); + if (errno == EINVAL || errno == ERANGE) { + syslog(LOG_ERR, "`%s' out of range", arg); + return -1; + } + break; + case 'm': + ifo->metric = atoint(arg); + if (ifo->metric < 0) { + syslog(LOG_ERR, "metric must be a positive value"); + return -1; + } + break; + case 'o': + if (make_option_mask(ifo->requestmask, arg, 1) != 0) { + syslog(LOG_ERR, "unknown option `%s'", arg); + return -1; + } + break; + case 'p': + ifo->options |= DHCPCD_PERSISTENT; + break; + case 'q': + ifo->options |= DHCPCD_QUIET; + break; + case 'r': + if (parse_addr(&ifo->req_addr, NULL, arg) != 0) + return -1; + ifo->options |= DHCPCD_REQUEST; + ifo->req_mask.s_addr = 0; + break; + case 's': + if (arg && *arg != '\0') { + if (parse_addr(&ifo->req_addr, &ifo->req_mask, + arg) != 0) + return -1; + } else { + ifo->req_addr.s_addr = 0; + ifo->req_mask.s_addr = 0; + } + ifo->options |= DHCPCD_INFORM | DHCPCD_PERSISTENT; + ifo->options &= ~(DHCPCD_ARP | DHCPCD_STATIC); + break; + case 't': + ifo->timeout = atoint(arg); + if (ifo->timeout < 0) { + syslog(LOG_ERR, "timeout must be a positive value"); + return -1; + } + break; + case 'u': + s = USERCLASS_MAX_LEN - ifo->userclass[0] - 1; + s = parse_string((char *)ifo->userclass + + ifo->userclass[0] + 2, + s, arg); + if (s == -1) { + syslog(LOG_ERR, "userclass: %m"); + return -1; + } + if (s != 0) { + ifo->userclass[ifo->userclass[0] + 1] = s; + ifo->userclass[0] += s + 1; + } + break; + case 'v': + p = strchr(arg, ','); + if (!p || !p[1]) { + syslog(LOG_ERR, "invalid vendor format"); + return -1; + } + + /* If vendor starts with , then it is not encapsulated */ + if (p == arg) { + arg++; + s = parse_string((char *)ifo->vendor + 1, + VENDOR_MAX_LEN, arg); + if (s == -1) { + syslog(LOG_ERR, "vendor: %m"); + return -1; + } + ifo->vendor[0] = (uint8_t)s; + ifo->options |= DHCPCD_VENDORRAW; + break; + } + + /* Encapsulated vendor options */ + if (ifo->options & DHCPCD_VENDORRAW) { + ifo->options &= ~DHCPCD_VENDORRAW; + ifo->vendor[0] = 0; + } + + *p = '\0'; + i = atoint(arg); + arg = p + 1; + if (i < 1 || i > 254) { + syslog(LOG_ERR, "vendor option should be between" + " 1 and 254 inclusive"); + return -1; + } + s = VENDOR_MAX_LEN - ifo->vendor[0] - 2; + if (inet_aton(arg, &addr) == 1) { + if (s < 6) { + s = -1; + errno = ENOBUFS; + } else + memcpy(ifo->vendor + ifo->vendor[0] + 3, + &addr.s_addr, sizeof(addr.s_addr)); + } else { + s = parse_string((char *)ifo->vendor + + ifo->vendor[0] + 3, s, arg); + } + if (s == -1) { + syslog(LOG_ERR, "vendor: %m"); + return -1; + } + if (s != 0) { + ifo->vendor[ifo->vendor[0] + 1] = i; + ifo->vendor[ifo->vendor[0] + 2] = s; + ifo->vendor[0] += s + 2; + } + break; + case 'w': + ifo->options |= DHCPCD_WAITIP; + break; + case 'y': + ifo->reboot = atoint(arg); + if (ifo->reboot < 0) { + syslog(LOG_ERR, "reboot must be a positive value"); + return -1; + } + break; + case 'z': + ifav = splitv(&ifac, ifav, arg); + break; + case 'A': + ifo->options &= ~DHCPCD_ARP; + /* IPv4LL requires ARP */ + ifo->options &= ~DHCPCD_IPV4LL; + break; + case 'B': + ifo->options &= ~DHCPCD_DAEMONISE; + break; + case 'C': + /* Commas to spaces for shell */ + while ((p = strchr(arg, ','))) + *p = ' '; + s = strlen("skip_hooks=") + strlen(arg) + 1; + p = xmalloc(sizeof(char) * s); + snprintf(p, s, "skip_hooks=%s", arg); + add_environ(ifo, p, 0); + free(p); + break; + case 'D': + ifo->options |= DHCPCD_CLIENTID | DHCPCD_DUID; + break; + case 'E': + ifo->options |= DHCPCD_LASTLEASE; + break; + case 'F': + if (!arg) { + ifo->fqdn = FQDN_BOTH; + break; + } + if (strcmp(arg, "none") == 0) + ifo->fqdn = FQDN_NONE; + else if (strcmp(arg, "ptr") == 0) + ifo->fqdn = FQDN_PTR; + else if (strcmp(arg, "both") == 0) + ifo->fqdn = FQDN_BOTH; + else if (strcmp(arg, "disable") == 0) + ifo->fqdn = FQDN_DISABLE; + else { + syslog(LOG_ERR, "invalid value `%s' for FQDN", arg); + return -1; + } + break; + case 'G': + ifo->options &= ~DHCPCD_GATEWAY; + break; + case 'H': + ifo->options |= DHCPCD_XID_HWADDR; + break; + case 'I': + /* Strings have a type of 0 */; + ifo->clientid[1] = 0; + if (arg) + s = parse_string_hwaddr((char *)ifo->clientid + 1, + CLIENTID_MAX_LEN, arg, 1); + else + s = 0; + if (s == -1) { + syslog(LOG_ERR, "clientid: %m"); + return -1; + } + ifo->options |= DHCPCD_CLIENTID; + ifo->clientid[0] = (uint8_t)s; + break; + case 'J': + ifo->options |= DHCPCD_BROADCAST; + break; + case 'K': + ifo->options &= ~DHCPCD_LINK; + break; + case 'L': + ifo->options &= ~DHCPCD_IPV4LL; + break; + case 'O': + if (make_option_mask(ifo->requestmask, arg, -1) != 0 || + make_option_mask(ifo->requiremask, arg, -1) != 0 || + make_option_mask(ifo->nomask, arg, 1) != 0) + { + syslog(LOG_ERR, "unknown option `%s'", arg); + return -1; + } + break; + case 'Q': + if (make_option_mask(ifo->requiremask, arg, 1) != 0 || + make_option_mask(ifo->requestmask, arg, 1) != 0) + { + syslog(LOG_ERR, "unknown option `%s'", arg); + return -1; + } + break; + case 'S': + p = strchr(arg, '='); + if (p == NULL) { + syslog(LOG_ERR, "static assignment required"); + return -1; + } + p++; + if (strncmp(arg, "ip_address=", strlen("ip_address=")) == 0) { + if (parse_addr(&ifo->req_addr, &ifo->req_mask, p) != 0) + return -1; + + ifo->options |= DHCPCD_STATIC; + ifo->options &= ~DHCPCD_INFORM; + } else if (strncmp(arg, "routes=", strlen("routes=")) == 0 || + strncmp(arg, "static_routes=", strlen("static_routes=")) == 0 || + strncmp(arg, "classless_static_routes=", strlen("classless_static_routes=")) == 0 || + strncmp(arg, "ms_classless_static_routes=", strlen("ms_classless_static_routes=")) == 0) + { + np = strchr(p, ' '); + if (np == NULL) { + syslog(LOG_ERR, "all routes need a gateway"); + return -1; + } + *np++ = '\0'; + while (*np == ' ') + np++; + if (ifo->routes == NULL) { + rt = ifo->routes = xmalloc(sizeof(*rt)); + } else { + rt = ifo->routes; + while (rt->next) + rt = rt->next; + rt->next = xmalloc(sizeof(*rt)); + rt = rt->next; + } + rt->next = NULL; + if (parse_addr(&rt->dest, &rt->net, p) == -1 || + parse_addr(&rt->gate, NULL, np) == -1) + return -1; + } else if (strncmp(arg, "routers=", strlen("routers=")) == 0) { + if (ifo->routes == NULL) { + rt = ifo->routes = xzalloc(sizeof(*rt)); + } else { + rt = ifo->routes; + while (rt->next) + rt = rt->next; + rt->next = xmalloc(sizeof(*rt)); + rt = rt->next; + } + rt->dest.s_addr = INADDR_ANY; + rt->net.s_addr = INADDR_ANY; + rt->next = NULL; + if (parse_addr(&rt->gate, NULL, p) == -1) + return -1; + } else { + s = 0; + if (ifo->config != NULL) { + while (ifo->config[s] != NULL) { + if (strncmp(ifo->config[s], arg, + p - arg) == 0) + { + free(ifo->config[s]); + ifo->config[s] = xstrdup(arg); + return 1; + } + s++; + } + } + ifo->config = xrealloc(ifo->config, + sizeof(char *) * (s + 2)); + ifo->config[s] = xstrdup(arg); + ifo->config[s + 1] = NULL; + } + break; + case 'W': + if (parse_addr(&addr, &addr2, arg) != 0) + return -1; + if (strchr(arg, '/') == NULL) + addr2.s_addr = INADDR_BROADCAST; + ifo->whitelist = xrealloc(ifo->whitelist, + sizeof(in_addr_t) * (ifo->whitelist_len + 2)); + ifo->whitelist[ifo->whitelist_len++] = addr.s_addr; + ifo->whitelist[ifo->whitelist_len++] = addr2.s_addr; + break; + case 'X': + if (parse_addr(&addr, &addr2, arg) != 0) + return -1; + if (strchr(arg, '/') == NULL) + addr2.s_addr = INADDR_BROADCAST; + ifo->blacklist = xrealloc(ifo->blacklist, + sizeof(in_addr_t) * (ifo->blacklist_len + 2)); + ifo->blacklist[ifo->blacklist_len++] = addr.s_addr; + ifo->blacklist[ifo->blacklist_len++] = addr2.s_addr; + break; + case 'Z': + ifdv = splitv(&ifdc, ifdv, arg); + break; + case O_ARPING: + if (parse_addr(&addr, NULL, arg) != 0) + return -1; + ifo->arping = xrealloc(ifo->arping, + sizeof(in_addr_t) * (ifo->arping_len + 1)); + ifo->arping[ifo->arping_len++] = addr.s_addr; + break; + case O_DESTINATION: + if (make_option_mask(ifo->dstmask, arg, 2) != 0) { + if (errno == EINVAL) + syslog(LOG_ERR, "option `%s' does not take" + " an IPv4 address", arg); + else + syslog(LOG_ERR, "unknown option `%s'", arg); + return -1; + } + break; + case O_FALLBACK: + free(ifo->fallback); + ifo->fallback = xstrdup(arg); + break; + default: + return 0; + } + + return 1; +} + +static int +parse_config_line(struct if_options *ifo, const char *opt, char *line) +{ + unsigned int i; + + for (i = 0; i < sizeof(cf_options) / sizeof(cf_options[0]); i++) { + if (!cf_options[i].name || + strcmp(cf_options[i].name, opt) != 0) + continue; + + if (cf_options[i].has_arg == required_argument && !line) { + fprintf(stderr, + PACKAGE ": option requires an argument -- %s\n", + opt); + return -1; + } + + return parse_option(ifo, cf_options[i].val, line); + } + + fprintf(stderr, PACKAGE ": unknown option -- %s\n", opt); + return -1; +} + +struct if_options * +read_config(const char *file, + const char *ifname, const char *ssid, const char *profile) +{ + struct if_options *ifo; + FILE *f; + char *line, *option, *p, *platform; + int skip = 0, have_profile = 0; + struct utsname utn; + + /* Seed our default options */ + ifo = xzalloc(sizeof(*ifo)); + ifo->options |= DHCPCD_GATEWAY | DHCPCD_DAEMONISE; + ifo->options |= DHCPCD_ARP | DHCPCD_IPV4LL | DHCPCD_LINK; + ifo->timeout = DEFAULT_TIMEOUT; + ifo->reboot = DEFAULT_REBOOT; + ifo->metric = -1; + strlcpy(ifo->script, SCRIPT, sizeof(ifo->script)); + gethostname(ifo->hostname, HOSTNAME_MAX_LEN); + /* Ensure that the hostname is NULL terminated */ + ifo->hostname[HOSTNAME_MAX_LEN] = '\0'; + if (strcmp(ifo->hostname, "(none)") == 0 || + strcmp(ifo->hostname, "localhost") == 0) + ifo->hostname[0] = '\0'; + + platform = hardware_platform(); + if (uname(&utn) == 0) + ifo->vendorclassid[0] = snprintf((char *)ifo->vendorclassid + 1, + VENDORCLASSID_MAX_LEN, + "%s-%s:%s-%s:%s%s%s", PACKAGE, VERSION, + utn.sysname, utn.release, utn.machine, + platform ? ":" : "", platform ? platform : ""); + else + ifo->vendorclassid[0] = snprintf((char *)ifo->vendorclassid + 1, + VENDORCLASSID_MAX_LEN, "%s-%s", PACKAGE, VERSION); + + /* Parse our options file */ + f = fopen(file ? file : CONFIG, "r"); + if (f == NULL) { + if (file != NULL) + syslog(LOG_ERR, "fopen `%s': %m", file); + return ifo; + } + + while ((line = get_line(f))) { + option = strsep(&line, " \t"); + /* Trim trailing whitespace */ + if (line && *line) { + p = line + strlen(line) - 1; + while (p != line && + (*p == ' ' || *p == '\t') && + *(p - 1) != '\\') + *p-- = '\0'; + } + /* Start of an interface block, skip if not ours */ + if (strcmp(option, "interface") == 0) { + if (ifname && line && strcmp(line, ifname) == 0) + skip = 0; + else + skip = 1; + continue; + } + /* Start of an ssid block, skip if not ours */ + if (strcmp(option, "ssid") == 0) { + if (ssid && line && strcmp(line, ssid) == 0) + skip = 0; + else + skip = 1; + continue; + } + /* Start of a profile block, skip if not ours */ + if (strcmp(option, "profile") == 0) { + if (profile && line && strcmp(line, profile) == 0) { + skip = 0; + have_profile = 1; + } else + skip = 1; + continue; + } + if (skip) + continue; + parse_config_line(ifo, option, line); + } + fclose(f); + + if (profile && !have_profile) { + free_options(ifo); + errno = ENOENT; + ifo = NULL; + } + + /* Terminate the encapsulated options */ + if (ifo && ifo->vendor[0] && !(ifo->options & DHCPCD_VENDORRAW)) { + ifo->vendor[0]++; + ifo->vendor[ifo->vendor[0]] = DHO_END; + } + return ifo; +} + +int +add_options(struct if_options *ifo, int argc, char **argv) +{ + int oi, opt, r = 1; + + optind = 0; + while ((opt = getopt_long(argc, argv, IF_OPTS, cf_options, &oi)) != -1) + { + r = parse_option(ifo, opt, optarg); + if (r != 1) + break; + } + /* Terminate the encapsulated options */ + if (r == 1 && ifo->vendor[0] && !(ifo->options & DHCPCD_VENDORRAW)) { + ifo->vendor[0]++; + ifo->vendor[ifo->vendor[0]] = DHO_END; + } + return r; +} + +void +free_options(struct if_options *ifo) +{ + size_t i; + + if (ifo) { + if (ifo->environ) { + i = 0; + while (ifo->environ[i]) + free(ifo->environ[i++]); + free(ifo->environ); + } + if (ifo->config) { + i = 0; + while (ifo->config[i]) + free(ifo->config[i++]); + free(ifo->config); + } + free_routes(ifo->routes); + free(ifo->arping); + free(ifo->blacklist); + free(ifo->fallback); + free(ifo); + } +} |