Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 657 insertions, 0 deletions

diff --git a/src/c-ares/ares.h b/src/c-ares/ares.h
new file mode 100644
index 000000000..dcee80a60
--- /dev/null
+++ b/src/c-ares/ares.h
@@ -0,0 +1,657 @@
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2007-2013 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.
+ */
+
+#ifndef ARES__H
+#define ARES__H
+
+#include "ares_version.h"  /* c-ares version defines   */
+#include "ares_build.h"    /* c-ares build definitions */
+#include "ares_rules.h"    /* c-ares rules enforcement */
+
+/*
+ * Define WIN32 when build target is Win32 API
+ */
+
+#if (defined(_WIN32) || defined(__WIN32__)) && \
+   !defined(WIN32) && !defined(__SYMBIAN32__)
+#  define WIN32
+#endif
+
+#include <sys/types.h>
+
+/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
+   libc5-based Linux systems. Only include it on system that are known to
+   require it! */
+#if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
+    defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) || \
+    defined(ANDROID) || defined(__ANDROID__) || defined(__OpenBSD__)
+#include <sys/select.h>
+#endif
+#if (defined(NETWARE) && !defined(__NOVELL_LIBC__))
+#include <sys/bsdskt.h>
+#endif
+
+#if defined(WATT32)
+#  include <netinet/in.h>
+#  include <sys/socket.h>
+#  include <tcp.h>
+#elif defined(_WIN32_WCE)
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN
+#  endif
+#  include <windows.h>
+#  include <winsock.h>
+#elif defined(WIN32)
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN
+#  endif
+#  include <windows.h>
+#  include <winsock2.h>
+#  include <ws2tcpip.h>
+#else
+#  include <sys/socket.h>
+#  include <netinet/in.h>
+#endif
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/*
+** c-ares external API function linkage decorations.
+*/
+
+#ifdef CARES_STATICLIB
+#  define CARES_EXTERN
+#elif defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)
+#  if defined(CARES_BUILDING_LIBRARY)
+#    define CARES_EXTERN  __declspec(dllexport)
+#  else
+#    define CARES_EXTERN  __declspec(dllimport)
+#  endif
+#elif defined(CARES_BUILDING_LIBRARY) && defined(CARES_SYMBOL_HIDING)
+#  define CARES_EXTERN CARES_SYMBOL_SCOPE_EXTERN
+#else
+#  define CARES_EXTERN
+#endif
+
+
+#define ARES_SUCCESS            0
+
+/* Server error codes (ARES_ENODATA indicates no relevant answer) */
+#define ARES_ENODATA            1
+#define ARES_EFORMERR           2
+#define ARES_ESERVFAIL          3
+#define ARES_ENOTFOUND          4
+#define ARES_ENOTIMP            5
+#define ARES_EREFUSED           6
+
+/* Locally generated error codes */
+#define ARES_EBADQUERY          7
+#define ARES_EBADNAME           8
+#define ARES_EBADFAMILY         9
+#define ARES_EBADRESP           10
+#define ARES_ECONNREFUSED       11
+#define ARES_ETIMEOUT           12
+#define ARES_EOF                13
+#define ARES_EFILE              14
+#define ARES_ENOMEM             15
+#define ARES_EDESTRUCTION       16
+#define ARES_EBADSTR            17
+
+/* ares_getnameinfo error codes */
+#define ARES_EBADFLAGS          18
+
+/* ares_getaddrinfo error codes */
+#define ARES_ENONAME            19
+#define ARES_EBADHINTS          20
+
+/* Uninitialized library error code */
+#define ARES_ENOTINITIALIZED    21          /* introduced in 1.7.0 */
+
+/* ares_library_init error codes */
+#define ARES_ELOADIPHLPAPI           22     /* introduced in 1.7.0 */
+#define ARES_EADDRGETNETWORKPARAMS   23     /* introduced in 1.7.0 */
+
+/* More error codes */
+#define ARES_ECANCELLED         24          /* introduced in 1.7.0 */
+
+/* Flag values */
+#define ARES_FLAG_USEVC         (1 << 0)
+#define ARES_FLAG_PRIMARY       (1 << 1)
+#define ARES_FLAG_IGNTC         (1 << 2)
+#define ARES_FLAG_NORECURSE     (1 << 3)
+#define ARES_FLAG_STAYOPEN      (1 << 4)
+#define ARES_FLAG_NOSEARCH      (1 << 5)
+#define ARES_FLAG_NOALIASES     (1 << 6)
+#define ARES_FLAG_NOCHECKRESP   (1 << 7)
+#define ARES_FLAG_EDNS          (1 << 8)
+
+/* Option mask values */
+#define ARES_OPT_FLAGS          (1 << 0)
+#define ARES_OPT_TIMEOUT        (1 << 1)
+#define ARES_OPT_TRIES          (1 << 2)
+#define ARES_OPT_NDOTS          (1 << 3)
+#define ARES_OPT_UDP_PORT       (1 << 4)
+#define ARES_OPT_TCP_PORT       (1 << 5)
+#define ARES_OPT_SERVERS        (1 << 6)
+#define ARES_OPT_DOMAINS        (1 << 7)
+#define ARES_OPT_LOOKUPS        (1 << 8)
+#define ARES_OPT_SOCK_STATE_CB  (1 << 9)
+#define ARES_OPT_SORTLIST       (1 << 10)
+#define ARES_OPT_SOCK_SNDBUF    (1 << 11)
+#define ARES_OPT_SOCK_RCVBUF    (1 << 12)
+#define ARES_OPT_TIMEOUTMS      (1 << 13)
+#define ARES_OPT_ROTATE         (1 << 14)
+#define ARES_OPT_EDNSPSZ        (1 << 15)
+#define ARES_OPT_NOROTATE       (1 << 16)
+
+/* Nameinfo flag values */
+#define ARES_NI_NOFQDN                  (1 << 0)
+#define ARES_NI_NUMERICHOST             (1 << 1)
+#define ARES_NI_NAMEREQD                (1 << 2)
+#define ARES_NI_NUMERICSERV             (1 << 3)
+#define ARES_NI_DGRAM                   (1 << 4)
+#define ARES_NI_TCP                     0
+#define ARES_NI_UDP                     ARES_NI_DGRAM
+#define ARES_NI_SCTP                    (1 << 5)
+#define ARES_NI_DCCP                    (1 << 6)
+#define ARES_NI_NUMERICSCOPE            (1 << 7)
+#define ARES_NI_LOOKUPHOST              (1 << 8)
+#define ARES_NI_LOOKUPSERVICE           (1 << 9)
+/* Reserved for future use */
+#define ARES_NI_IDN                     (1 << 10)
+#define ARES_NI_IDN_ALLOW_UNASSIGNED    (1 << 11)
+#define ARES_NI_IDN_USE_STD3_ASCII_RULES (1 << 12)
+
+/* Addrinfo flag values */
+#define ARES_AI_CANONNAME               (1 << 0)
+#define ARES_AI_NUMERICHOST             (1 << 1)
+#define ARES_AI_PASSIVE                 (1 << 2)
+#define ARES_AI_NUMERICSERV             (1 << 3)
+#define ARES_AI_V4MAPPED                (1 << 4)
+#define ARES_AI_ALL                     (1 << 5)
+#define ARES_AI_ADDRCONFIG              (1 << 6)
+/* Reserved for future use */
+#define ARES_AI_IDN                     (1 << 10)
+#define ARES_AI_IDN_ALLOW_UNASSIGNED    (1 << 11)
+#define ARES_AI_IDN_USE_STD3_ASCII_RULES (1 << 12)
+#define ARES_AI_CANONIDN                (1 << 13)
+
+#define ARES_AI_MASK (ARES_AI_CANONNAME|ARES_AI_NUMERICHOST|ARES_AI_PASSIVE| \
+                      ARES_AI_NUMERICSERV|ARES_AI_V4MAPPED|ARES_AI_ALL| \
+                      ARES_AI_ADDRCONFIG)
+#define ARES_GETSOCK_MAXNUM 16 /* ares_getsock() can return info about this
+                                  many sockets */
+#define ARES_GETSOCK_READABLE(bits,num) (bits & (1<< (num)))
+#define ARES_GETSOCK_WRITABLE(bits,num) (bits & (1 << ((num) + \
+                                         ARES_GETSOCK_MAXNUM)))
+
+/* c-ares library initialization flag values */
+#define ARES_LIB_INIT_NONE   (0)
+#define ARES_LIB_INIT_WIN32  (1 << 0)
+#define ARES_LIB_INIT_ALL    (ARES_LIB_INIT_WIN32)
+
+
+/*
+ * Typedef our socket type
+ */
+
+#ifndef ares_socket_typedef
+#ifdef WIN32
+typedef SOCKET ares_socket_t;
+#define ARES_SOCKET_BAD INVALID_SOCKET
+#else
+typedef int ares_socket_t;
+#define ARES_SOCKET_BAD -1
+#endif
+#define ares_socket_typedef
+#endif /* ares_socket_typedef */
+
+typedef void (*ares_sock_state_cb)(void *data,
+                                   ares_socket_t socket_fd,
+                                   int readable,
+                                   int writable);
+
+struct apattern;
+
+/* NOTE about the ares_options struct to users and developers.
+
+   This struct will remain looking like this. It will not be extended nor
+   shrunk in future releases, but all new options will be set by ares_set_*()
+   options instead of with the ares_init_options() function.
+
+   Eventually (in a galaxy far far away), all options will be settable by
+   ares_set_*() options and the ares_init_options() function will become
+   deprecated.
+
+   When new options are added to c-ares, they are not added to this
+   struct. And they are not "saved" with the ares_save_options() function but
+   instead we encourage the use of the ares_dup() function. Needless to say,
+   if you add config options to c-ares you need to make sure ares_dup()
+   duplicates this new option.
+
+ */
+struct ares_options {
+  int flags;
+  int timeout; /* in seconds or milliseconds, depending on options */
+  int tries;
+  int ndots;
+  unsigned short udp_port;
+  unsigned short tcp_port;
+  int socket_send_buffer_size;
+  int socket_receive_buffer_size;
+  struct in_addr *servers;
+  int nservers;
+  char **domains;
+  int ndomains;
+  char *lookups;
+  ares_sock_state_cb sock_state_cb;
+  void *sock_state_cb_data;
+  struct apattern *sortlist;
+  int nsort;
+  int ednspsz;
+};
+
+struct hostent;
+struct timeval;
+struct sockaddr;
+struct ares_channeldata;
+
+typedef struct ares_channeldata *ares_channel;
+
+typedef void (*ares_callback)(void *arg,
+                              int status,
+                              int timeouts,
+                              unsigned char *abuf,
+                              int alen);
+
+typedef void (*ares_host_callback)(void *arg,
+                                   int status,
+                                   int timeouts,
+                                   struct hostent *hostent);
+
+typedef void (*ares_nameinfo_callback)(void *arg,
+                                       int status,
+                                       int timeouts,
+                                       char *node,
+                                       char *service);
+
+typedef int  (*ares_sock_create_callback)(ares_socket_t socket_fd,
+                                          int type,
+                                          void *data);
+
+typedef int  (*ares_sock_config_callback)(ares_socket_t socket_fd,
+                                          int type,
+                                          void *data);
+
+CARES_EXTERN int ares_library_init(int flags);
+
+CARES_EXTERN int ares_library_init_mem(int flags,
+                                       void *(*amalloc)(size_t size),
+                                       void (*afree)(void *ptr),
+                                       void *(*arealloc)(void *ptr, size_t size));
+
+CARES_EXTERN int ares_library_initialized(void);
+
+CARES_EXTERN void ares_library_cleanup(void);
+
+CARES_EXTERN const char *ares_version(int *version);
+
+CARES_EXTERN int ares_init(ares_channel *channelptr);
+
+CARES_EXTERN int ares_init_options(ares_channel *channelptr,
+                                   struct ares_options *options,
+                                   int optmask);
+
+CARES_EXTERN int ares_save_options(ares_channel channel,
+                                   struct ares_options *options,
+                                   int *optmask);
+
+CARES_EXTERN void ares_destroy_options(struct ares_options *options);
+
+CARES_EXTERN int ares_dup(ares_channel *dest,
+                          ares_channel src);
+
+CARES_EXTERN void ares_destroy(ares_channel channel);
+
+CARES_EXTERN void ares_cancel(ares_channel channel);
+
+/* These next 3 configure local binding for the out-going socket
+ * connection.  Use these to specify source IP and/or network device
+ * on multi-homed systems.
+ */
+CARES_EXTERN void ares_set_local_ip4(ares_channel channel, unsigned int local_ip);
+
+/* local_ip6 should be 16 bytes in length */
+CARES_EXTERN void ares_set_local_ip6(ares_channel channel,
+                                     const unsigned char* local_ip6);
+
+/* local_dev_name should be null terminated. */
+CARES_EXTERN void ares_set_local_dev(ares_channel channel,
+                                     const char* local_dev_name);
+
+CARES_EXTERN void ares_set_socket_callback(ares_channel channel,
+                                           ares_sock_create_callback callback,
+                                           void *user_data);
+
+CARES_EXTERN void ares_set_socket_configure_callback(ares_channel channel,
+                                                     ares_sock_config_callback callback,
+                                                     void *user_data);
+
+CARES_EXTERN int ares_set_sortlist(ares_channel channel,
+                                   const char *sortstr);
+
+/*
+ * Virtual function set to have user-managed socket IO.
+ * Note that all functions need to be defined, and when
+ * set, the library will not do any bind nor set any
+ * socket options, assuming the client handles these
+ * through either socket creation or the
+ * ares_sock_config_callback call.
+ */
+struct iovec;
+struct ares_socket_functions {
+   ares_socket_t(*asocket)(int, int, int, void *);
+   int(*aclose)(ares_socket_t, void *);
+   int(*aconnect)(ares_socket_t, const struct sockaddr *, socklen_t, void *);
+   ssize_t(*arecvfrom)(ares_socket_t, void *, size_t, int, struct sockaddr *, socklen_t *, void *);
+   ssize_t(*asendv)(ares_socket_t, const struct iovec *, int, void *);
+};
+
+CARES_EXTERN void ares_set_socket_functions(ares_channel channel,
+					    const struct ares_socket_functions * funcs,
+					    void *user_data);
+
+CARES_EXTERN void ares_send(ares_channel channel,
+                            const unsigned char *qbuf,
+                            int qlen,
+                            ares_callback callback,
+                            void *arg);
+
+CARES_EXTERN void ares_query(ares_channel channel,
+                             const char *name,
+                             int dnsclass,
+                             int type,
+                             ares_callback callback,
+                             void *arg);
+
+CARES_EXTERN void ares_search(ares_channel channel,
+                              const char *name,
+                              int dnsclass,
+                              int type,
+                              ares_callback callback,
+                              void *arg);
+
+CARES_EXTERN void ares_gethostbyname(ares_channel channel,
+                                     const char *name,
+                                     int family,
+                                     ares_host_callback callback,
+                                     void *arg);
+
+CARES_EXTERN int ares_gethostbyname_file(ares_channel channel,
+                                         const char *name,
+                                         int family,
+                                         struct hostent **host);
+
+CARES_EXTERN void ares_gethostbyaddr(ares_channel channel,
+                                     const void *addr,
+                                     int addrlen,
+                                     int family,
+                                     ares_host_callback callback,
+                                     void *arg);
+
+CARES_EXTERN void ares_getnameinfo(ares_channel channel,
+                                   const struct sockaddr *sa,
+                                   ares_socklen_t salen,
+                                   int flags,
+                                   ares_nameinfo_callback callback,
+                                   void *arg);
+
+CARES_EXTERN int ares_fds(ares_channel channel,
+                          fd_set *read_fds,
+                          fd_set *write_fds);
+
+CARES_EXTERN int ares_getsock(ares_channel channel,
+                              ares_socket_t *socks,
+                              int numsocks);
+
+CARES_EXTERN struct timeval *ares_timeout(ares_channel channel,
+                                          struct timeval *maxtv,
+                                          struct timeval *tv);
+
+CARES_EXTERN void ares_process(ares_channel channel,
+                               fd_set *read_fds,
+                               fd_set *write_fds);
+
+CARES_EXTERN void ares_process_fd(ares_channel channel,
+                                  ares_socket_t read_fd,
+                                  ares_socket_t write_fd);
+
+CARES_EXTERN int ares_create_query(const char *name,
+                                   int dnsclass,
+                                   int type,
+                                   unsigned short id,
+                                   int rd,
+                                   unsigned char **buf,
+                                   int *buflen,
+                                   int max_udp_size);
+
+CARES_EXTERN int ares_mkquery(const char *name,
+                              int dnsclass,
+                              int type,
+                              unsigned short id,
+                              int rd,
+                              unsigned char **buf,
+                              int *buflen);
+
+CARES_EXTERN int ares_expand_name(const unsigned char *encoded,
+                                  const unsigned char *abuf,
+                                  int alen,
+                                  char **s,
+                                  long *enclen);
+
+CARES_EXTERN int ares_expand_string(const unsigned char *encoded,
+                                    const unsigned char *abuf,
+                                    int alen,
+                                    unsigned char **s,
+                                    long *enclen);
+
+/*
+ * NOTE: before c-ares 1.7.0 we would most often use the system in6_addr
+ * struct below when ares itself was built, but many apps would use this
+ * private version since the header checked a HAVE_* define for it. Starting
+ * with 1.7.0 we always declare and use our own to stop relying on the
+ * system's one.
+ */
+struct ares_in6_addr {
+  union {
+    unsigned char _S6_u8[16];
+  } _S6_un;
+};
+
+struct ares_addrttl {
+  struct in_addr ipaddr;
+  int            ttl;
+};
+
+struct ares_addr6ttl {
+  struct ares_in6_addr ip6addr;
+  int             ttl;
+};
+
+struct ares_srv_reply {
+  struct ares_srv_reply  *next;
+  char                   *host;
+  unsigned short          priority;
+  unsigned short          weight;
+  unsigned short          port;
+};
+
+struct ares_mx_reply {
+  struct ares_mx_reply   *next;
+  char                   *host;
+  unsigned short          priority;
+};
+
+struct ares_txt_reply {
+  struct ares_txt_reply  *next;
+  unsigned char          *txt;
+  size_t                  length;  /* length excludes null termination */
+};
+
+/* NOTE: This structure is a superset of ares_txt_reply
+ */
+struct ares_txt_ext {
+  struct ares_txt_ext      *next;
+  unsigned char            *txt;
+  size_t                   length;
+  /* 1 - if start of new record
+   * 0 - if a chunk in the same record */
+  unsigned char            record_start;
+};
+
+struct ares_naptr_reply {
+  struct ares_naptr_reply *next;
+  unsigned char           *flags;
+  unsigned char           *service;
+  unsigned char           *regexp;
+  char                    *replacement;
+  unsigned short           order;
+  unsigned short           preference;
+};
+
+struct ares_soa_reply {
+  char        *nsname;
+  char        *hostmaster;
+  unsigned int serial;
+  unsigned int refresh;
+  unsigned int retry;
+  unsigned int expire;
+  unsigned int minttl;
+};
+
+/*
+** Parse the buffer, starting at *abuf and of length alen bytes, previously
+** obtained from an ares_search call.  Put the results in *host, if nonnull.
+** Also, if addrttls is nonnull, put up to *naddrttls IPv4 addresses along with
+** their TTLs in that array, and set *naddrttls to the number of addresses
+** so written.
+*/
+
+CARES_EXTERN int ares_parse_a_reply(const unsigned char *abuf,
+                                    int alen,
+                                    struct hostent **host,
+                                    struct ares_addrttl *addrttls,
+                                    int *naddrttls);
+
+CARES_EXTERN int ares_parse_aaaa_reply(const unsigned char *abuf,
+                                       int alen,
+                                       struct hostent **host,
+                                       struct ares_addr6ttl *addrttls,
+                                       int *naddrttls);
+
+CARES_EXTERN int ares_parse_ptr_reply(const unsigned char *abuf,
+                                      int alen,
+                                      const void *addr,
+                                      int addrlen,
+                                      int family,
+                                      struct hostent **host);
+
+CARES_EXTERN int ares_parse_ns_reply(const unsigned char *abuf,
+                                     int alen,
+                                     struct hostent **host);
+
+CARES_EXTERN int ares_parse_srv_reply(const unsigned char* abuf,
+                                      int alen,
+                                      struct ares_srv_reply** srv_out);
+
+CARES_EXTERN int ares_parse_mx_reply(const unsigned char* abuf,
+                                      int alen,
+                                      struct ares_mx_reply** mx_out);
+
+CARES_EXTERN int ares_parse_txt_reply(const unsigned char* abuf,
+                                      int alen,
+                                      struct ares_txt_reply** txt_out);
+
+CARES_EXTERN int ares_parse_txt_reply_ext(const unsigned char* abuf,
+                                          int alen,
+                                          struct ares_txt_ext** txt_out);
+
+CARES_EXTERN int ares_parse_naptr_reply(const unsigned char* abuf,
+                                        int alen,
+                                        struct ares_naptr_reply** naptr_out);
+
+CARES_EXTERN int ares_parse_soa_reply(const unsigned char* abuf,
+				      int alen,
+				      struct ares_soa_reply** soa_out);
+
+CARES_EXTERN void ares_free_string(void *str);
+
+CARES_EXTERN void ares_free_hostent(struct hostent *host);
+
+CARES_EXTERN void ares_free_data(void *dataptr);
+
+CARES_EXTERN const char *ares_strerror(int code);
+
+struct ares_addr_node {
+  struct ares_addr_node *next;
+  int family;
+  union {
+    struct in_addr       addr4;
+    struct ares_in6_addr addr6;
+  } addr;
+};
+
+struct ares_addr_port_node {
+  struct ares_addr_port_node *next;
+  int family;
+  union {
+    struct in_addr       addr4;
+    struct ares_in6_addr addr6;
+  } addr;
+  int udp_port;
+  int tcp_port;
+};
+
+CARES_EXTERN int ares_set_servers(ares_channel channel,
+                                  struct ares_addr_node *servers);
+CARES_EXTERN int ares_set_servers_ports(ares_channel channel,
+                                        struct ares_addr_port_node *servers);
+
+/* Incomming string format: host[:port][,host[:port]]... */
+CARES_EXTERN int ares_set_servers_csv(ares_channel channel,
+                                      const char* servers);
+CARES_EXTERN int ares_set_servers_ports_csv(ares_channel channel,
+                                            const char* servers);
+
+CARES_EXTERN int ares_get_servers(ares_channel channel,
+                                  struct ares_addr_node **servers);
+CARES_EXTERN int ares_get_servers_ports(ares_channel channel,
+                                        struct ares_addr_port_node **servers);
+
+CARES_EXTERN const char *ares_inet_ntop(int af, const void *src, char *dst,
+                                        ares_socklen_t size);
+
+CARES_EXTERN int ares_inet_pton(int af, const char *src, void *dst);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* ARES__H */