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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
commit | 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch) | |
tree | e5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/c-ares/ares_data.c | |
parent | Initial commit. (diff) | |
download | ceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.tar.xz ceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.zip |
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/c-ares/ares_data.c')
-rw-r--r-- | src/c-ares/ares_data.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/src/c-ares/ares_data.c b/src/c-ares/ares_data.c new file mode 100644 index 00000000..f8911138 --- /dev/null +++ b/src/c-ares/ares_data.c @@ -0,0 +1,221 @@ + +/* Copyright (C) 2009-2013 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" + +#include <stddef.h> + +#include "ares.h" +#include "ares_data.h" +#include "ares_private.h" + + +/* +** ares_free_data() - c-ares external API function. +** +** This function must be used by the application to free data memory that +** has been internally allocated by some c-ares function and for which a +** pointer has already been returned to the calling application. The list +** of c-ares functions returning pointers that must be free'ed using this +** function is: +** +** ares_get_servers() +** ares_parse_srv_reply() +** ares_parse_txt_reply() +*/ + +void ares_free_data(void *dataptr) +{ + struct ares_data *ptr; + + if (!dataptr) + return; + +#ifdef __INTEL_COMPILER +# pragma warning(push) +# pragma warning(disable:1684) + /* 1684: conversion from pointer to same-sized integral type */ +#endif + + ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); + +#ifdef __INTEL_COMPILER +# pragma warning(pop) +#endif + + if (ptr->mark != ARES_DATATYPE_MARK) + return; + + switch (ptr->type) + { + case ARES_DATATYPE_MX_REPLY: + + if (ptr->data.mx_reply.next) + ares_free_data(ptr->data.mx_reply.next); + if (ptr->data.mx_reply.host) + ares_free(ptr->data.mx_reply.host); + break; + + case ARES_DATATYPE_SRV_REPLY: + + if (ptr->data.srv_reply.next) + ares_free_data(ptr->data.srv_reply.next); + if (ptr->data.srv_reply.host) + ares_free(ptr->data.srv_reply.host); + break; + + case ARES_DATATYPE_TXT_REPLY: + case ARES_DATATYPE_TXT_EXT: + + if (ptr->data.txt_reply.next) + ares_free_data(ptr->data.txt_reply.next); + if (ptr->data.txt_reply.txt) + ares_free(ptr->data.txt_reply.txt); + break; + + case ARES_DATATYPE_ADDR_NODE: + + if (ptr->data.addr_node.next) + ares_free_data(ptr->data.addr_node.next); + break; + + case ARES_DATATYPE_ADDR_PORT_NODE: + + if (ptr->data.addr_port_node.next) + ares_free_data(ptr->data.addr_port_node.next); + break; + + case ARES_DATATYPE_NAPTR_REPLY: + + if (ptr->data.naptr_reply.next) + ares_free_data(ptr->data.naptr_reply.next); + if (ptr->data.naptr_reply.flags) + ares_free(ptr->data.naptr_reply.flags); + if (ptr->data.naptr_reply.service) + ares_free(ptr->data.naptr_reply.service); + if (ptr->data.naptr_reply.regexp) + ares_free(ptr->data.naptr_reply.regexp); + if (ptr->data.naptr_reply.replacement) + ares_free(ptr->data.naptr_reply.replacement); + break; + + case ARES_DATATYPE_SOA_REPLY: + if (ptr->data.soa_reply.nsname) + ares_free(ptr->data.soa_reply.nsname); + if (ptr->data.soa_reply.hostmaster) + ares_free(ptr->data.soa_reply.hostmaster); + break; + + default: + return; + } + + ares_free(ptr); +} + + +/* +** ares_malloc_data() - c-ares internal helper function. +** +** This function allocates memory for a c-ares private ares_data struct +** for the specified ares_datatype, initializes c-ares private fields +** and zero initializes those which later might be used from the public +** API. It returns an interior pointer which can be passed by c-ares +** functions to the calling application, and that must be free'ed using +** c-ares external API function ares_free_data(). +*/ + +void *ares_malloc_data(ares_datatype type) +{ + struct ares_data *ptr; + + ptr = ares_malloc(sizeof(struct ares_data)); + if (!ptr) + return NULL; + + switch (type) + { + case ARES_DATATYPE_MX_REPLY: + ptr->data.mx_reply.next = NULL; + ptr->data.mx_reply.host = NULL; + ptr->data.mx_reply.priority = 0; + break; + + case ARES_DATATYPE_SRV_REPLY: + ptr->data.srv_reply.next = NULL; + ptr->data.srv_reply.host = NULL; + ptr->data.srv_reply.priority = 0; + ptr->data.srv_reply.weight = 0; + ptr->data.srv_reply.port = 0; + break; + + case ARES_DATATYPE_TXT_EXT: + ptr->data.txt_ext.record_start = 0; + /* FALLTHROUGH */ + + case ARES_DATATYPE_TXT_REPLY: + ptr->data.txt_reply.next = NULL; + ptr->data.txt_reply.txt = NULL; + ptr->data.txt_reply.length = 0; + break; + + case ARES_DATATYPE_ADDR_NODE: + ptr->data.addr_node.next = NULL; + ptr->data.addr_node.family = 0; + memset(&ptr->data.addr_node.addrV6, 0, + sizeof(ptr->data.addr_node.addrV6)); + break; + + case ARES_DATATYPE_ADDR_PORT_NODE: + ptr->data.addr_port_node.next = NULL; + ptr->data.addr_port_node.family = 0; + ptr->data.addr_port_node.udp_port = 0; + ptr->data.addr_port_node.tcp_port = 0; + memset(&ptr->data.addr_port_node.addrV6, 0, + sizeof(ptr->data.addr_port_node.addrV6)); + break; + + case ARES_DATATYPE_NAPTR_REPLY: + ptr->data.naptr_reply.next = NULL; + ptr->data.naptr_reply.flags = NULL; + ptr->data.naptr_reply.service = NULL; + ptr->data.naptr_reply.regexp = NULL; + ptr->data.naptr_reply.replacement = NULL; + ptr->data.naptr_reply.order = 0; + ptr->data.naptr_reply.preference = 0; + break; + + case ARES_DATATYPE_SOA_REPLY: + ptr->data.soa_reply.nsname = NULL; + ptr->data.soa_reply.hostmaster = NULL; + ptr->data.soa_reply.serial = 0; + ptr->data.soa_reply.refresh = 0; + ptr->data.soa_reply.retry = 0; + ptr->data.soa_reply.expire = 0; + ptr->data.soa_reply.minttl = 0; + break; + + default: + ares_free(ptr); + return NULL; + } + + ptr->mark = ARES_DATATYPE_MARK; + ptr->type = type; + + return &ptr->data; +} |