diff options
Diffstat (limited to 'resolve.c')
| -rw-r--r-- | resolve.c | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/resolve.c b/resolve.c deleted file mode 100644 index 198181c..0000000 --- a/resolve.c +++ /dev/null @@ -1,155 +0,0 @@ -/* - * Copyright (C) 2006-2009 Stig Venaas <venaas@uninett.no> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - */ - -void resolve_freehostport(struct hostportres *hp) { - if (hp) { - free(hp->host); - free(hp->port); - if (hp->addrinfo) - freeaddrinfo(hp->addrinfo); - free(hp); - } -} - -int resolve_parsehostport(struct hostportres *hp, char *hostport, char *default_port) { - char *p, *field; - int ipv6 = 0; - - p = hostport; - /* allow literal addresses and port, e.g. [2001:db8::1]:1812 */ - if (*p == '[') { - p++; - field = p; - for (; *p && *p != ']' && *p != ' ' && *p != '\t' && *p != '\n'; p++); - if (*p != ']') { - debug(DBG_ERR, "no ] matching initial ["); - return 0; - } - ipv6 = 1; - } else { - field = p; - for (; *p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n'; p++); - } - if (field == p) { - debug(DBG_ERR, "missing host/address"); - return 0; - } - - hp->host = stringcopy(field, p - field); - if (ipv6) { - p++; - if (*p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n') { - debug(DBG_ERR, "unexpected character after ]"); - return 0; - } - } - if (*p == ':') { - /* port number or service name is specified */; - field = ++p; - for (; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++); - if (field == p) { - debug(DBG_ERR, "syntax error, : but no following port"); - return 0; - } - hp->port = stringcopy(field, p - field); - } else - hp->port = default_port ? stringcopy(default_port, 0) : NULL; - return 1; -} - -struct hostportres *resolve_newhostport(char *hostport, char *default_port, int socktype, uint8_t passive, uint8_t prefixok) { - struct hostportres *hp; - struct addrinfo hints, *res; - char *slash, *s; - int plen = 0; - - hp = malloc(sizeof(struct hostportres)); - if (!hp) { - debug(DBG_ERR, "resolve_newhostport: malloc failed"); - goto errexit; - } - memset(hp, 0, sizeof(struct hostportres)); - - if (!resolve_parsehostport(hp, hostport, default_port)) - goto errexit; - - if (!strcmp(hp->host, "*")) { - free(hp->host); - hp->host = NULL; - } - - slash = hp->host ? strchr(hp->host, '/') : NULL; - if (slash) { - if (!prefixok) { - debug(DBG_WARN, "resolve_newhostport: prefix not allowed here", hp->host); - goto errexit; - } - s = slash + 1; - if (!*s) { - debug(DBG_WARN, "resolve_newhostport: prefix length must be specified after the / in %s", hp->host); - goto errexit; - } - for (; *s; s++) - if (*s < '0' || *s > '9') { - debug(DBG_WARN, "resolve_newhostport: %s in %s is not a valid prefix length", slash + 1, hp->host); - goto errexit; - } - plen = atoi(slash + 1); - if (plen < 0 || plen > 128) { - debug(DBG_WARN, "resolve_newhostport: %s in %s is not a valid prefix length", slash + 1, hp->host); - goto errexit; - } - *slash = '\0'; - } - - memset(&hints, 0, sizeof(hints)); - hints.ai_socktype = socktype; - hints.ai_family = AF_UNSPEC; - if (passive) - hints.ai_flags = AI_PASSIVE; - - if (!hp->host && !hp->port) { - /* getaddrinfo() doesn't like host and port to be NULL */ - if (getaddrinfo(hp->host, default_port, &hints, &hp->addrinfo)) { - debug(DBG_WARN, "resolve_newhostport: can't resolve (null) port (null)"); - goto errexit; - } - for (res = hp->addrinfo; res; res = res->ai_next) - port_set(res->ai_addr, 0); - } else { - if (slash) - hints.ai_flags |= AI_NUMERICHOST; - if (getaddrinfo(hp->host, hp->port, &hints, &hp->addrinfo)) { - debug(DBG_WARN, "resolve_newhostport: can't resolve %s port %s", hp->host ? hp->host : "(null)", hp->port ? hp->port : "(null)"); - goto errexit; - } - if (slash) { - *slash = '/'; - switch (hp->addrinfo->ai_family) { - case AF_INET: - if (plen > 32) { - debug(DBG_WARN, "resolve_newhostport: prefix length must be <= 32 in %s", hp->host); - goto errexit; - } - break; - case AF_INET6: - break; - default: - debug(DBG_WARN, "resolve_newhostport: prefix must be IPv4 or IPv6 in %s", hp->host); - goto errexit; - } - hp->prefixlen = (uint8_t)plen; - } else - hp->prefixlen = 255; - } - return hp; - - errexit: - resolve_freehostport(hostportres); - return NULL; -} |