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author | Seonah Moon <seonah1.moon@samsung.com> | 2020-12-15 19:56:19 +0900 |
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committer | Seonah Moon <seonah1.moon@samsung.com> | 2020-12-15 19:58:58 +0900 |
commit | bff27be9aa171a5afc25df79cd652337aa1ecbb0 (patch) | |
tree | bdfd96ad0138ccded52d4194d101dcc3eb7d959b /ares_options.c | |
parent | 8e609b5f488d486a9e066ed494218d966f489938 (diff) | |
download | c-ares-bff27be9aa171a5afc25df79cd652337aa1ecbb0.tar.gz c-ares-bff27be9aa171a5afc25df79cd652337aa1ecbb0.tar.bz2 c-ares-bff27be9aa171a5afc25df79cd652337aa1ecbb0.zip |
Imported Upstream version 1.17.1upstream/1.17.1
Change-Id: Ifb18ec521bbeaf8bac560e0588657f136ca93e5d
Diffstat (limited to 'ares_options.c')
-rw-r--r-- | ares_options.c | 402 |
1 files changed, 0 insertions, 402 deletions
diff --git a/ares_options.c b/ares_options.c deleted file mode 100644 index c3cbd1d..0000000 --- a/ares_options.c +++ /dev/null @@ -1,402 +0,0 @@ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2008-2013 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - - -#include "ares_setup.h" - -#ifdef HAVE_ARPA_INET_H -# include <arpa/inet.h> -#endif - -#include "ares.h" -#include "ares_data.h" -#include "ares_inet_net_pton.h" -#include "ares_private.h" - - -int ares_get_servers(ares_channel channel, - struct ares_addr_node **servers) -{ - struct ares_addr_node *srvr_head = NULL; - struct ares_addr_node *srvr_last = NULL; - struct ares_addr_node *srvr_curr; - int status = ARES_SUCCESS; - int i; - - if (!channel) - return ARES_ENODATA; - - for (i = 0; i < channel->nservers; i++) - { - /* Allocate storage for this server node appending it to the list */ - srvr_curr = ares_malloc_data(ARES_DATATYPE_ADDR_NODE); - if (!srvr_curr) - { - status = ARES_ENOMEM; - break; - } - if (srvr_last) - { - srvr_last->next = srvr_curr; - } - else - { - srvr_head = srvr_curr; - } - srvr_last = srvr_curr; - - /* Fill this server node data */ - srvr_curr->family = channel->servers[i].addr.family; - if (srvr_curr->family == AF_INET) - memcpy(&srvr_curr->addrV4, &channel->servers[i].addr.addrV4, - sizeof(srvr_curr->addrV4)); - else - memcpy(&srvr_curr->addrV6, &channel->servers[i].addr.addrV6, - sizeof(srvr_curr->addrV6)); - } - - if (status != ARES_SUCCESS) - { - if (srvr_head) - { - ares_free_data(srvr_head); - srvr_head = NULL; - } - } - - *servers = srvr_head; - - return status; -} - -int ares_get_servers_ports(ares_channel channel, - struct ares_addr_port_node **servers) -{ - struct ares_addr_port_node *srvr_head = NULL; - struct ares_addr_port_node *srvr_last = NULL; - struct ares_addr_port_node *srvr_curr; - int status = ARES_SUCCESS; - int i; - - if (!channel) - return ARES_ENODATA; - - for (i = 0; i < channel->nservers; i++) - { - /* Allocate storage for this server node appending it to the list */ - srvr_curr = ares_malloc_data(ARES_DATATYPE_ADDR_PORT_NODE); - if (!srvr_curr) - { - status = ARES_ENOMEM; - break; - } - if (srvr_last) - { - srvr_last->next = srvr_curr; - } - else - { - srvr_head = srvr_curr; - } - srvr_last = srvr_curr; - - /* Fill this server node data */ - srvr_curr->family = channel->servers[i].addr.family; - srvr_curr->udp_port = ntohs((unsigned short)channel->servers[i].addr.udp_port); - srvr_curr->tcp_port = ntohs((unsigned short)channel->servers[i].addr.tcp_port); - if (srvr_curr->family == AF_INET) - memcpy(&srvr_curr->addrV4, &channel->servers[i].addr.addrV4, - sizeof(srvr_curr->addrV4)); - else - memcpy(&srvr_curr->addrV6, &channel->servers[i].addr.addrV6, - sizeof(srvr_curr->addrV6)); - } - - if (status != ARES_SUCCESS) - { - if (srvr_head) - { - ares_free_data(srvr_head); - srvr_head = NULL; - } - } - - *servers = srvr_head; - - return status; -} - -int ares_set_servers(ares_channel channel, - struct ares_addr_node *servers) -{ - struct ares_addr_node *srvr; - int num_srvrs = 0; - int i; - - if (ares_library_initialized() != ARES_SUCCESS) - return ARES_ENOTINITIALIZED; /* LCOV_EXCL_LINE: n/a on non-WinSock */ - - if (!channel) - return ARES_ENODATA; - - ares__destroy_servers_state(channel); - - for (srvr = servers; srvr; srvr = srvr->next) - { - num_srvrs++; - } - - if (num_srvrs > 0) - { - /* Allocate storage for servers state */ - channel->servers = ares_malloc(num_srvrs * sizeof(struct server_state)); - if (!channel->servers) - { - return ARES_ENOMEM; - } - channel->nservers = num_srvrs; - /* Fill servers state address data */ - for (i = 0, srvr = servers; srvr; i++, srvr = srvr->next) - { - channel->servers[i].addr.family = srvr->family; - channel->servers[i].addr.udp_port = 0; - channel->servers[i].addr.tcp_port = 0; - if (srvr->family == AF_INET) - memcpy(&channel->servers[i].addr.addrV4, &srvr->addrV4, - sizeof(srvr->addrV4)); - else - memcpy(&channel->servers[i].addr.addrV6, &srvr->addrV6, - sizeof(srvr->addrV6)); - } - /* Initialize servers state remaining data */ - ares__init_servers_state(channel); - } - - return ARES_SUCCESS; -} - -int ares_set_servers_ports(ares_channel channel, - struct ares_addr_port_node *servers) -{ - struct ares_addr_port_node *srvr; - int num_srvrs = 0; - int i; - - if (ares_library_initialized() != ARES_SUCCESS) - return ARES_ENOTINITIALIZED; /* LCOV_EXCL_LINE: n/a on non-WinSock */ - - if (!channel) - return ARES_ENODATA; - - ares__destroy_servers_state(channel); - - for (srvr = servers; srvr; srvr = srvr->next) - { - num_srvrs++; - } - - if (num_srvrs > 0) - { - /* Allocate storage for servers state */ - channel->servers = ares_malloc(num_srvrs * sizeof(struct server_state)); - if (!channel->servers) - { - return ARES_ENOMEM; - } - channel->nservers = num_srvrs; - /* Fill servers state address data */ - for (i = 0, srvr = servers; srvr; i++, srvr = srvr->next) - { - channel->servers[i].addr.family = srvr->family; - channel->servers[i].addr.udp_port = htons((unsigned short)srvr->udp_port); - channel->servers[i].addr.tcp_port = htons((unsigned short)srvr->tcp_port); - if (srvr->family == AF_INET) - memcpy(&channel->servers[i].addr.addrV4, &srvr->addrV4, - sizeof(srvr->addrV4)); - else - memcpy(&channel->servers[i].addr.addrV6, &srvr->addrV6, - sizeof(srvr->addrV6)); - } - /* Initialize servers state remaining data */ - ares__init_servers_state(channel); - } - - return ARES_SUCCESS; -} - -/* Incomming string format: host[:port][,host[:port]]... */ -/* IPv6 addresses with ports require square brackets [fe80::1%lo0]:53 */ -static int set_servers_csv(ares_channel channel, - const char* _csv, int use_port) -{ - size_t i; - char* csv = NULL; - char* ptr; - char* start_host; - int cc = 0; - int rv = ARES_SUCCESS; - struct ares_addr_port_node *servers = NULL; - struct ares_addr_port_node *last = NULL; - - if (ares_library_initialized() != ARES_SUCCESS) - return ARES_ENOTINITIALIZED; /* LCOV_EXCL_LINE: n/a on non-WinSock */ - - if (!channel) - return ARES_ENODATA; - - ares__destroy_servers_state(channel); - - i = strlen(_csv); - if (i == 0) - return ARES_SUCCESS; /* blank all servers */ - - csv = ares_malloc(i + 2); - if (!csv) - return ARES_ENOMEM; - - strcpy(csv, _csv); - if (csv[i-1] != ',') { /* make parsing easier by ensuring ending ',' */ - csv[i] = ','; - csv[i+1] = 0; - } - - start_host = csv; - for (ptr = csv; *ptr; ptr++) { - if (*ptr == ':') { - /* count colons to determine if we have an IPv6 number or IPv4 with - port */ - cc++; - } - else if (*ptr == '[') { - /* move start_host if an open square bracket is found wrapping an IPv6 - address */ - start_host = ptr + 1; - } - else if (*ptr == ',') { - char* pp = ptr - 1; - char* p = ptr; - int port = 0; - struct in_addr in4; - struct ares_in6_addr in6; - struct ares_addr_port_node *s = NULL; - - *ptr = 0; /* null terminate host:port string */ - /* Got an entry..see if the port was specified. */ - if (cc > 0) { - while (pp > start_host) { - /* a single close square bracket followed by a colon, ']:' indicates - an IPv6 address with port */ - if ((*pp == ']') && (*p == ':')) - break; /* found port */ - /* a single colon, ':' indicates an IPv4 address with port */ - if ((*pp == ':') && (cc == 1)) - break; /* found port */ - if (!(ISDIGIT(*pp) || (*pp == ':'))) { - /* Found end of digits before we found :, so wasn't a port */ - /* must allow ':' for IPv6 case of ']:' indicates we found a port */ - pp = p = ptr; - break; - } - pp--; - p--; - } - if ((pp != start_host) && ((pp + 1) < ptr)) { - /* Found it. Parse over the port number */ - /* when an IPv6 address is wrapped with square brackets the port - starts at pp + 2 */ - if (*pp == ']') - p++; /* move p before ':' */ - /* p will point to the start of the port */ - port = (int)strtol(p, NULL, 10); - *pp = 0; /* null terminate host */ - } - } - /* resolve host, try ipv4 first, rslt is in network byte order */ - rv = ares_inet_pton(AF_INET, start_host, &in4); - if (!rv) { - /* Ok, try IPv6 then */ - rv = ares_inet_pton(AF_INET6, start_host, &in6); - if (!rv) { - rv = ARES_EBADSTR; - goto out; - } - /* was ipv6, add new server */ - s = ares_malloc(sizeof(*s)); - if (!s) { - rv = ARES_ENOMEM; - goto out; - } - s->family = AF_INET6; - memcpy(&s->addr, &in6, sizeof(struct ares_in6_addr)); - } - else { - /* was ipv4, add new server */ - s = ares_malloc(sizeof(*s)); - if (!s) { - rv = ARES_ENOMEM; - goto out; - } - s->family = AF_INET; - memcpy(&s->addr, &in4, sizeof(struct in_addr)); - } - if (s) { - s->udp_port = use_port ? port: 0; - s->tcp_port = s->udp_port; - s->next = NULL; - if (last) { - last->next = s; - /* need to move last to maintain the linked list */ - last = last->next; - } - else { - servers = s; - last = s; - } - } - - /* Set up for next one */ - start_host = ptr + 1; - cc = 0; - } - } - - rv = ares_set_servers_ports(channel, servers); - - out: - if (csv) - ares_free(csv); - while (servers) { - struct ares_addr_port_node *s = servers; - servers = servers->next; - ares_free(s); - } - - return rv; -} - -int ares_set_servers_csv(ares_channel channel, - const char* _csv) -{ - return set_servers_csv(channel, _csv, FALSE); -} - -int ares_set_servers_ports_csv(ares_channel channel, - const char* _csv) -{ - return set_servers_csv(channel, _csv, TRUE); -} - |