aboutsummaryrefslogtreecommitdiffstats
path: root/libesmtp
diff options
context:
space:
mode:
Diffstat (limited to 'libesmtp')
-rw-r--r--libesmtp/1.0.3r1/getaddrinfo.c314
-rw-r--r--libesmtp/1.0.3r1/getaddrinfo.h67
-rw-r--r--libesmtp/1.0.3r1/gethostbyname.c228
-rw-r--r--libesmtp/1.0.3r1/gethostbyname.h103
4 files changed, 712 insertions, 0 deletions
diff --git a/libesmtp/1.0.3r1/getaddrinfo.c b/libesmtp/1.0.3r1/getaddrinfo.c
new file mode 100644
index 00000000..575b51d2
--- /dev/null
+++ b/libesmtp/1.0.3r1/getaddrinfo.c
@@ -0,0 +1,314 @@
+/*
+ * This file is part of libESMTP, a library for submission of RFC 2822
+ * formatted electronic mail messages using the SMTP protocol described
+ * in RFC 2821.
+ *
+ * Copyright (C) 2001,2002 Brian Stafford <brian@stafford.uklinux.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/* An emulation of the RFC 2553 / Posix getaddrinfo resolver interface.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+/* Need to turn off Posix features in glibc to build this */
+#undef _POSIX_C_SOURCE
+#undef _XOPEN_SOURCE
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <netdb.h>
+
+#include "gethostbyname.h"
+#include "getaddrinfo.h"
+
+static struct addrinfo *
+dup_addrinfo (struct addrinfo *info, void *addr, size_t addrlen)
+{
+ struct addrinfo *ret;
+
+ ret = malloc (sizeof (struct addrinfo));
+ if (ret == NULL)
+ return NULL;
+ memcpy (ret, info, sizeof (struct addrinfo));
+ ret->ai_addr = malloc (addrlen);
+ if (ret->ai_addr == NULL)
+ {
+ free (ret);
+ return NULL;
+ }
+ memcpy (ret->ai_addr, addr, addrlen);
+ ret->ai_addrlen = addrlen;
+ return ret;
+}
+
+int
+getaddrinfo (const char *nodename, const char *servname,
+ const struct addrinfo *hints, struct addrinfo **res)
+{
+ struct hostent *hp;
+ struct servent *servent;
+ const char *socktype;
+ int port;
+ struct addrinfo hint, result;
+ struct addrinfo *ai, *sai, *eai;
+ struct ghbnctx ghbnctx;
+ char **addrs;
+ int code;
+
+ memset (&result, 0, sizeof result);
+
+ /* default for hints */
+ if (hints == NULL)
+ {
+ memset (&hint, 0, sizeof hint);
+ hint.ai_family = PF_UNSPEC;
+ hints = &hint;
+ }
+
+ /* servname must not be NULL in this implementation */
+ if (servname == NULL)
+ return EAI_NONAME;
+
+ /* check for tcp or udp sockets only */
+ if (hints->ai_socktype == SOCK_STREAM)
+ socktype = "tcp";
+ else if (hints->ai_socktype == SOCK_DGRAM)
+ socktype = "udp";
+ else
+ return EAI_SERVICE;
+ result.ai_socktype = hints->ai_socktype;
+
+ /* Note: maintain port in host byte order to make debugging easier */
+ if (isdigit (*servname))
+ port = strtol (servname, NULL, 10);
+ else if ((servent = getservbyname (servname, socktype)) != NULL)
+ port = ntohs (servent->s_port);
+ else
+ return EAI_NONAME;
+
+ /* if nodename == NULL refer to the local host for a client or any
+ for a server */
+ if (nodename == NULL)
+ {
+ struct sockaddr_in sin;
+
+ /* check protocol family is PF_UNSPEC or PF_INET - could try harder
+ for IPv6 but that's more code than I'm prepared to write */
+ if (hints->ai_family == PF_UNSPEC || hints->ai_family == PF_INET)
+ result.ai_family = AF_INET;
+ else
+ return EAI_FAMILY;
+
+ sin.sin_family = result.ai_family;
+ sin.sin_port = htons (port);
+ if (hints->ai_flags & AI_PASSIVE)
+ sin.sin_addr.s_addr = htonl (INADDR_ANY);
+ else
+ sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
+ /* Duplicate result and addr and return */
+ *res = dup_addrinfo (&result, &sin, sizeof sin);
+ return (*res == NULL) ? EAI_MEMORY : 0;
+ }
+
+ /* If AI_NUMERIC is specified, use inet_addr to translate numbers and
+ dots notation. */
+ if (hints->ai_flags & AI_NUMERICHOST)
+ {
+ struct sockaddr_in sin;
+
+ /* check protocol family is PF_UNSPEC or PF_INET */
+ if (hints->ai_family == PF_UNSPEC || hints->ai_family == PF_INET)
+ result.ai_family = AF_INET;
+ else
+ return EAI_FAMILY;
+
+ sin.sin_family = result.ai_family;
+ sin.sin_port = htons (port);
+ sin.sin_addr.s_addr = inet_addr (nodename);
+ /* Duplicate result and addr and return */
+ *res = dup_addrinfo (&result, &sin, sizeof sin);
+ return (*res == NULL) ? EAI_MEMORY : 0;
+ }
+
+ errno = 0;
+ hp = gethostbyname_ctx (nodename, &ghbnctx);
+ if (hp == NULL)
+ {
+ if (errno != 0)
+ {
+ free_ghbnctx (&ghbnctx);
+ return EAI_SYSTEM;
+ }
+ code = h_error_ctx (&ghbnctx);
+ switch (code)
+ {
+ case HOST_NOT_FOUND: code = EAI_NODATA; break;
+ case NO_DATA: code = EAI_NODATA; break;
+#if defined(NO_ADDRESS) && NO_ADDRESS != NO_DATA
+ case NO_ADDRESS: code = EAI_NODATA; break;
+#endif
+ case NO_RECOVERY: code = EAI_FAIL; break;
+ case TRY_AGAIN: code = EAI_AGAIN; break;
+ default: code = EAI_FAIL; break;
+ }
+ free_ghbnctx (&ghbnctx);
+ return code;
+ }
+
+ /* Check that the address family is acceptable.
+ */
+ switch (hp->h_addrtype)
+ {
+ case AF_INET:
+ if (!(hints->ai_family == PF_UNSPEC || hints->ai_family == PF_INET))
+ goto eai_family;
+ break;
+#ifdef USE_IPV6
+ case AF_INET6:
+ if (!(hints->ai_family == PF_UNSPEC || hints->ai_family == PF_INET6))
+ goto eai_family;
+ break;
+#endif
+ default:
+ eai_family:
+ free_ghbnctx (&ghbnctx);
+ return EAI_FAMILY;
+ }
+
+ /* For each element pointed to by hp, create an element in the
+ result linked list. */
+ sai = eai = NULL;
+ for (addrs = hp->h_addr_list; *addrs != NULL; addrs++)
+ {
+ struct sockaddr sa;
+ size_t addrlen;
+
+ if (hp->h_length < 1)
+ continue;
+ sa.sa_family = hp->h_addrtype;
+ switch (hp->h_addrtype)
+ {
+ case AF_INET:
+ ((struct sockaddr_in *) &sa)->sin_port = htons (port);
+ memcpy (&((struct sockaddr_in *) &sa)->sin_addr,
+ *addrs, hp->h_length);
+ addrlen = sizeof (struct sockaddr_in);
+ break;
+#ifdef USE_IPV6
+ case AF_INET6:
+# if SIN6_LEN
+ ((struct sockaddr_in6 *) &sa)->sin6_len = hp->h_length;
+# endif
+ ((struct sockaddr_in6 *) &sa)->sin6_port = htons (port);
+ memcpy (&((struct sockaddr_in6 *) &sa)->sin6_addr,
+ *addrs, hp->h_length);
+ addrlen = sizeof (struct sockaddr_in6);
+ break;
+#endif
+ default:
+ continue;
+ }
+
+ result.ai_family = hp->h_addrtype;
+ ai = dup_addrinfo (&result, &sa, addrlen);
+ if (ai == NULL)
+ {
+ free_ghbnctx (&ghbnctx);
+ freeaddrinfo (sai);
+ return EAI_MEMORY;
+ }
+ if (sai == NULL)
+ sai = ai;
+ else
+ eai->ai_next = ai;
+ eai = ai;
+ }
+
+ if (sai == NULL)
+ {
+ free_ghbnctx (&ghbnctx);
+ return EAI_NODATA;
+ }
+
+ if (hints->ai_flags & AI_CANONNAME)
+ {
+ sai->ai_canonname = malloc (strlen (hp->h_name) + 1);
+ if (sai->ai_canonname == NULL)
+ {
+ free_ghbnctx (&ghbnctx);
+ freeaddrinfo (sai);
+ return EAI_MEMORY;
+ }
+ strcpy (sai->ai_canonname, hp->h_name);
+ }
+
+ free_ghbnctx (&ghbnctx);
+ *res = sai;
+ return 0;
+}
+
+void
+freeaddrinfo (struct addrinfo *ai)
+{
+ struct addrinfo *next;
+
+ while (ai != NULL)
+ {
+ next = ai->ai_next;
+ if (ai->ai_canonname != NULL)
+ free (ai->ai_canonname);
+ if (ai->ai_addr != NULL)
+ free (ai->ai_addr);
+ free (ai);
+ ai = next;
+ }
+}
+
+const char *
+gai_strerror (int ecode)
+{
+ static const char *eai_descr[] =
+ {
+ "no error",
+ "address family for nodename not supported", /* EAI_ADDRFAMILY */
+ "temporary failure in name resolution", /* EAI_AGAIN */
+ "invalid value for ai_flags", /* EAI_BADFLAGS */
+ "non-recoverable failure in name resolution", /* EAI_FAIL */
+ "ai_family not supported", /* EAI_FAMILY */
+ "memory allocation failure", /* EAI_MEMORY */
+ "no address associated with nodename", /* EAI_NODATA */
+ "nodename nor servname provided, or not known", /* EAI_NONAME */
+ "servname not supported for ai_socktype", /* EAI_SERVICE */
+ "ai_socktype not supported", /* EAI_SOCKTYPE */
+ "system error returned in errno", /* EAI_SYSTEM */
+ };
+
+ if (ecode < 0 || ecode > (int) (sizeof eai_descr/ sizeof eai_descr[0]))
+ return "unknown error";
+ return eai_descr[ecode];
+}
+
diff --git a/libesmtp/1.0.3r1/getaddrinfo.h b/libesmtp/1.0.3r1/getaddrinfo.h
new file mode 100644
index 00000000..c474d3bc
--- /dev/null
+++ b/libesmtp/1.0.3r1/getaddrinfo.h
@@ -0,0 +1,67 @@
+#ifndef _getaddrinfo_h
+#define _getaddrinfo_h
+/*
+ * This file is part of libESMTP, a library for submission of RFC 2822
+ * formatted electronic mail messages using the SMTP protocol described
+ * in RFC 2821.
+ *
+ * Copyright (C) 2001,2002 Brian Stafford <brian@stafford.uklinux.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/* Structure and prototypes aken from RFC 2553 */
+
+struct addrinfo
+ {
+ int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
+ int ai_family; /* PF_xxx */
+ int ai_socktype; /* SOCK_xxx */
+ int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
+ size_t ai_addrlen; /* length of ai_addr */
+ char *ai_canonname; /* canonical name for nodename */
+ struct sockaddr *ai_addr; /* binary address */
+ struct addrinfo *ai_next; /* next structure in linked list */
+ };
+
+/* Supposed to be defined in <netdb.h> */
+#define AI_PASSIVE 1 /* Socket address is intended for `bind'. */
+#define AI_CANONNAME 2 /* Request for canonical name. */
+#define AI_NUMERICHOST 4 /* Don't use name resolution. */
+
+/* Supposed to be defined in <netdb.h> */
+#define EAI_ADDRFAMILY 1 /* address family for nodename not supported */
+#define EAI_AGAIN 2 /* temporary failure in name resolution */
+#define EAI_BADFLAGS 3 /* invalid value for ai_flags */
+#define EAI_FAIL 4 /* non-recoverable failure in name resolution */
+#define EAI_FAMILY 5 /* ai_family not supported */
+#define EAI_MEMORY 6 /* memory allocation failure */
+#define EAI_NODATA 7 /* no address associated with nodename */
+#define EAI_NONAME 8 /* nodename nor servname provided, or not known */
+#define EAI_SERVICE 9 /* servname not supported for ai_socktype */
+#define EAI_SOCKTYPE 10 /* ai_socktype not supported */
+#define EAI_SYSTEM 11 /* system error returned in errno */
+
+/* RFC 2553 / Posix resolver */
+int getaddrinfo (const char *nodename, const char *servname,
+ const struct addrinfo *hints, struct addrinfo **res);
+
+/* Free addrinfo structure and associated storage */
+void freeaddrinfo (struct addrinfo *ai);
+
+/* Convert error return from getaddrinfo() to string */
+const char *gai_strerror (int code);
+
+#endif
diff --git a/libesmtp/1.0.3r1/gethostbyname.c b/libesmtp/1.0.3r1/gethostbyname.c
new file mode 100644
index 00000000..d151606d
--- /dev/null
+++ b/libesmtp/1.0.3r1/gethostbyname.c
@@ -0,0 +1,228 @@
+/*
+ * This file is a ghastly hack because nobody can agree on
+ * gethostbyname_r()'s prototype.
+ *
+ * Copyright (C) 2001,2002 Brian Stafford <brian@stafford.uklinux.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _SVID_SOURCE 1 /* Need this to get gethostbyname_r() */
+
+#include <assert.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <netdb.h>
+#include <errno.h>
+
+#include "gethostbyname.h"
+
+#if HAVE_GETIPNODEBYNAME
+
+void
+free_ghbnctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ if (ctx->hostent != NULL)
+ freehostent (ctx->hostent);
+}
+
+struct hostent *
+gethostbyname_ctx (const char *host, struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ memset (ctx, 0, sizeof (struct ghbnctx));
+ ctx->hostent = getipnodebyname (host, AF_UNSPEC, AI_ADDRCONFIG, &ctx->h_err);
+ return ctx->hostent;
+}
+
+int
+h_error_ctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ return ctx->h_err;
+}
+
+#elif HAVE_GETHOSTBYNAME_R == 6
+
+void
+free_ghbnctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ if (ctx->hostbuf != NULL)
+ free (ctx->hostbuf);
+}
+
+struct hostent *
+gethostbyname_ctx (const char *host, struct ghbnctx *ctx)
+{
+ struct hostent *hp;
+ char *tmp;
+ int err;
+
+ assert (ctx != NULL);
+
+ memset (ctx, 0, sizeof (struct ghbnctx));
+ ctx->hostbuf_len = 2048;
+ if ((ctx->hostbuf = malloc (ctx->hostbuf_len)) == NULL)
+ {
+ errno = ENOMEM;
+ return NULL;
+ }
+ while ((err = gethostbyname_r (host,
+ &ctx->hostent, ctx->hostbuf, ctx->hostbuf_len,
+ &hp, &ctx->h_err)) == ERANGE)
+ {
+ ctx->hostbuf_len += 1024;
+ if ((tmp = realloc (ctx->hostbuf, ctx->hostbuf_len)) == NULL)
+ {
+ errno = ENOMEM;
+ return NULL;
+ }
+ ctx->hostbuf = tmp;
+ }
+ if (err != 0)
+ {
+ errno = err;
+ return NULL;
+ }
+ return hp;
+}
+
+int
+h_error_ctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ return ctx->h_err;
+}
+
+#elif HAVE_GETHOSTBYNAME_R == 5
+
+void
+free_ghbnctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ if (ctx->hostbuf != NULL)
+ free (ctx->hostbuf);
+}
+
+struct hostent *
+gethostbyname_ctx (const char *host, struct ghbnctx *ctx)
+{
+ struct hostent *hp;
+ char *tmp;
+
+ assert (ctx != NULL);
+
+ memset (ctx, 0, sizeof (struct ghbnctx));
+ ctx->hostbuf_len = 2048;
+ if ((ctx->hostbuf = malloc (ctx->hostbuf_len)) == NULL)
+ {
+ errno = ENOMEM;
+ return NULL;
+ }
+ while ((hp = gethostbyname_r (host, &ctx->hostent,
+ ctx->hostbuf, ctx->hostbuf_len,
+ &ctx->h_err)) == NULL && errno == ERANGE)
+ {
+ ctx->hostbuf_len += 1024;
+ if ((tmp = realloc (ctx->hostbuf, ctx->hostbuf_len)) == NULL)
+ {
+ errno = ENOMEM;
+ return NULL;
+ }
+ ctx->hostbuf = tmp;
+ }
+ return hp;
+}
+
+int
+h_error_ctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ return ctx->h_err;
+}
+
+#elif HAVE_GETHOSTBYNAME_R == 3
+
+void
+free_ghbnctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ /* FIXME: does this need to do anything? */
+}
+
+struct hostent *
+gethostbyname_ctx (const char *host, struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ if (!gethostbyname_r (host, &ctx->hostent, &ctx->hostent_data))
+ {
+ ctx->h_err = h_errno; /* FIXME: is this correct? */
+ return NULL;
+ }
+ return &ctx->hostent;
+}
+
+int
+h_error_ctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ return ctx->h_err;
+}
+
+#else
+
+void
+free_ghbnctx (struct ghbnctx *ctx __attribute__ ((unused)))
+{
+ assert (ctx != NULL);
+}
+
+struct hostent *
+gethostbyname_ctx (const char *host, struct ghbnctx *ctx)
+{
+ struct hostent *hp;
+
+ hp = gethostbyname (host);
+ if (hp == NULL)
+ ctx->h_err = h_errno;
+ return hp;
+}
+
+int
+h_error_ctx (struct ghbnctx *ctx)
+{
+ assert (ctx != NULL);
+
+ return ctx->h_err;
+}
+
+#endif
diff --git a/libesmtp/1.0.3r1/gethostbyname.h b/libesmtp/1.0.3r1/gethostbyname.h
new file mode 100644
index 00000000..2b963997
--- /dev/null
+++ b/libesmtp/1.0.3r1/gethostbyname.h
@@ -0,0 +1,103 @@
+/*
+ * This file is a ghastly hack because nobody can agree on
+ * gethostbyname_r()'s prototype.
+ *
+ * Copyright (C) 2001,2002 Brian Stafford <brian@stafford.uklinux.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*************************************************************************
+ Usage:
+
+ #include <errno.h>
+ #include "gethostbyname.h"
+
+ f ()
+ {
+ struct ghbnctx ctx;
+
+ errno = 0;
+ hp = gethostbyname_ctx (host, &ctx);
+ if (hp == NULL)
+ {
+ if (errno != 0)
+ handle_value_of_errno (errno);
+ else
+ handle_value_of_h_errno (h_error_ctx (&ctx));
+ }
+ else
+ {
+ ...
+ }
+ free_ghbnctx (&ctx);
+ }
+ *************************************************************************/
+
+#ifndef _gethostbyname_h
+#define _gethostbyname_h
+
+#if HAVE_GETIPNODEBYNAME
+
+struct ghbnctx
+ {
+ int h_err;
+ struct hostent *hostent;
+ };
+
+#elif HAVE_GETHOSTBYNAME_R == 6
+
+struct ghbnctx
+ {
+ int h_err;
+ struct hostent hostent;
+ char *hostbuf;
+ size_t hostbuf_len;
+ };
+
+#elif HAVE_GETHOSTBYNAME_R == 5
+
+struct ghbnctx
+ {
+ int h_err;
+ struct hostent hostent;
+ char *hostbuf;
+ int hostbuf_len;
+ };
+
+#elif HAVE_GETHOSTBYNAME_R == 3
+
+struct ghbnctx
+ {
+ int h_err;
+ struct hostent_data hostent_data;
+ struct hostent hostent;
+ };
+
+#else
+
+struct ghbnctx
+ {
+ int h_err;
+ };
+
+#endif
+
+struct hostent *gethostbyname_ctx (const char *host, struct ghbnctx *ctx);
+int h_error_ctx (struct ghbnctx *ctx);
+void free_ghbnctx (struct ghbnctx *ctx);
+
+#endif
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 14:31:53 +0000