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belliash 2013-06-28 18:46:40 +02:00
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339
COPYING Normal file
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
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When we speak of free software, we are referring to freedom, not
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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NO WARRANTY
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
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(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

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Makefile Normal file
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CC = gcc
CFLAGS = -O2 -s -D_GNU_SOURCE
LDLIBS = -lcyassl -lm
PREFIX =
BINDIR = $(PREFIX)/usr/bin
ifeq ($(CROSS_BUILD), 1)
DEFS:=-DCROSS_BUILD
else
DEFS:=
endif
all: webget webpost
@echo "All done!"
webget: webget.o libweb.o
$(CC) $(CFLAGS) $(LDLIBS) webget.o libweb.o -o webget
webpost: webpost.o libweb.o
$(CC) $(CFLAGS) $(LDLIBS) webpost.o libweb.o -o webpost
webget.o: webget.c
$(CC) $(CFLAGS) $(DEFS) -c webget.c
webpost.o: webpost.c
$(CC) $(CFLAGS) $(DEFS) -c webpost.c
libweb.o: libweb.c
$(CC) $(CFLAGS) $(DEFS) -c libweb.c
install:
mkdir -p $(BINDIR)
cp webget $(BINDIR)
cp webpost $(BINDIR)
@echo "All done!"
uninstall:
@rm -f $(BINDIR)/webget
@rm -f $(BINDIR)/webpost
@echo "All done!"
clean:
rm -f webget webpost *.o
@echo "All done!"

21
README Normal file
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WebGet
======
WebGet fetches an HTTP and HTTPS URLs and dumps the contents to stdout. It does
not do gopher, ftp, file, news, or any other type of URL, only HTTP. It can be
configured to do HTTPS fetches as well.
It is based on http_get <http://acme.com/software/http_get/>
WebPost
=======
WebPost does a POST operation to an HTTP and HTTPS URLs and dumps the results to
stdout. It does not do gopher, ftp, file, news, or any other type of URL, only
HTTP. It can be configured to do HTTPS POSTs as well.
It is based on http_post <http://acme.com/software/http_post/>

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webget
======
WebGet &amp; WebPost Utilities

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/**
* @PROJECT WebGet Downloader
* @COPYRIGHT See COPYING in the top level directory
* @FILE libweb.c
* @PURPOSE Common Web Library
* @DEVELOPERS Al Globus <globus@nas.nasa.gov>
* Rafal Kupiec <belliash@asiotec.eu.org>
* Jef Poskanzer <jef@mail.acme.com>
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <cyassl/openssl/ssl.h>
#include <cyassl/openssl/err.h>
#include <cyassl/error.h>
#ifdef CROSS_BUILD
#include <cyassl/cyassl_error.h>
#endif
#include "libweb.h"
int b64_encode(unsigned char* ptr, int len, char* space, int size) {
int ptr_idx, space_idx, phase;
char c;
space_idx = 0;
phase = 0;
for(ptr_idx = 0; ptr_idx < len; ++ptr_idx) {
switch(phase) {
case 0:
c = b64_encode_table[ptr[ptr_idx] >> 2];
if(space_idx < size) {
space[space_idx++] = c;
}
c = b64_encode_table[(ptr[ptr_idx] & 0x3) << 4];
if(space_idx < size) {
space[space_idx++] = c;
}
++phase;
break;
case 1:
space[space_idx - 1] = b64_encode_table[b64_decode_table[(int) ((unsigned char) space[space_idx - 1])] | (ptr[ptr_idx] >> 4)];
c = b64_encode_table[(ptr[ptr_idx] & 0xf) << 2];
if(space_idx < size) {
space[space_idx++] = c;
}
++phase;
break;
case 2:
space[space_idx - 1] = b64_encode_table[b64_decode_table[(int) ((unsigned char) space[space_idx - 1])] | (ptr[ptr_idx] >> 6)];
c = b64_encode_table[ptr[ptr_idx] & 0x3f];
if(space_idx < size) {
space[space_idx++] = c;
}
phase = 0;
break;
}
}
while(phase++ < 3) {
if(space_idx < size) {
space[space_idx++] = '=';
}
}
return space_idx;
}
void check(void* ptr) {
if(ptr == (void*) 0) {
(void) fprintf(stderr, "%s: out of memory\n", argv0);
exit(1);
}
}
off_t file_bytes(const char* filename) {
struct stat sb;
if(stat(filename, &sb) < 0) {
perror(filename);
exit(1);
}
return sb.st_size;
}
int file_copy(const char* filename, char* buf) {
int fd;
struct stat sb;
off_t bytes;
fd = open(filename, O_RDONLY);
if(fd == -1) {
perror(filename);
exit(-1);
}
if(fstat(fd, &sb) != 0) {
perror(filename);
exit(-1);
}
bytes = sb.st_size;
if(read(fd, buf, bytes) != bytes) {
perror(filename);
exit(-1);
}
(void) close(fd);
return bytes;
}
int getURL(char* url, char* referer, char* user_agent, char* auth_token, int ncookies, char** cookies, char* header_name, char* header_value) {
char* s;
int protocol;
char host[2000];
int host_len;
unsigned short port;
char* file = (char*) 0;
char* http = "http://";
int http_len = strlen( http );
char* https = "https://";
int https_len = strlen( https );
int proto_len;
if(url == (char*) 0) {
(void) fprintf(stderr, "%s: null URL\n", argv0);
exit(1);
}
if(strncmp(http, url, http_len) == 0) {
proto_len = http_len;
protocol = PROTO_HTTP;
} else if(strncmp(https, url, https_len) == 0) {
proto_len = https_len;
protocol = PROTO_HTTPS;
} else {
(void) fprintf(stderr, "%s: non-http URL\n", argv0);
exit(1);
}
for(s = url + proto_len; *s != '\0' && *s != ':' && *s != '/'; ++s);
host_len = s - url;
host_len -= proto_len;
strncpy(host, url + proto_len, host_len);
host[host_len] = '\0';
if(*s == ':') {
port = (unsigned short) atoi(++s);
while(*s != '\0' && *s != '/')
++s;
} else {
if(protocol == PROTO_HTTPS) {
port = 443;
} else {
port = 80;
}
}
if(*s == '\0') {
file = "/";
} else {
file = s;
}
return getURLbyParts(protocol, host, port, file, referer, user_agent, auth_token, ncookies, cookies, header_name, header_value);
}
int getURLbyParts(int protocol, char* host, unsigned short port, char* file, char* referer, char* user_agent, char* auth_token, int ncookies, char** cookies, char* header_name, char* header_value) {
int sockfd;
SSL_CTX* ssl_ctx = (SSL_CTX*) 0;
SSL* ssl = (SSL*) 0;
char buf[20000];
int i, bytes, b, header_state, status;
(void) alarm(timeout);
sockfd = open_client_socket(host, port);
if(protocol == PROTO_HTTPS) {
int r;
ssl_ctx = SSL_CTX_new(TLSv1_client_method());
SSL_CTX_set_verify(ssl_ctx, SSL_VERIFY_NONE, 0);
ssl = SSL_new(ssl_ctx);
SSL_set_fd(ssl, sockfd);
r = SSL_connect(ssl);
if(r <= 0) {
(void) fprintf(stderr, "%s: %s - SSL connection failed - %d\n", argv0, url, r);
exit(1);
}
}
(void) alarm(timeout);
bytes = snprintf(buf, sizeof(buf), "GET %s HTTP/1.0\r\n", file);
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "Host: %s\r\n", host);
if(referer != (char*) 0) {
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "Referer: %s\r\n", referer);
}
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "User-Agent: %s\r\n", user_agent);
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "Accept: */*\r\n");
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "Accept-Language: en\r\n");
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "Accept-Charset: iso-8859-1,*,utf-8\r\n");
if(auth_token != (char*) 0) {
char token_buf[1000];
token_buf[b64_encode((unsigned char*) auth_token, strlen( auth_token ), token_buf, sizeof(token_buf))] = '\0';
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "Authorization: Basic %s\r\n", token_buf);
}
for(i = 0; i < ncookies; ++i) {
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "Cookie: %s\r\n", cookies[i]);
}
if(header_name != (char*) 0) {
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "%s: %s\r\n", header_name, header_value);
}
bytes += snprintf(&buf[bytes], sizeof(buf) - bytes, "\r\n");
if (protocol == PROTO_HTTPS)
(void) SSL_write(ssl, buf, bytes);
else
(void) write(sockfd, buf, bytes);
(void) alarm(timeout);
header_state = HDST_LINE1_PROTOCOL;
status = 0;
for(;;) {
if(protocol == PROTO_HTTPS) {
bytes = SSL_read(ssl, buf, sizeof(buf));
} else {
bytes = read(sockfd, buf, sizeof(buf));
}
if(bytes <= 0) {
break;
}
for(b = 0; b < bytes; ++b) {
if(verbose) {
(void) write(1, &buf[b], 1);
}
switch(header_state) {
case HDST_LINE1_PROTOCOL:
switch(buf[b]) {
case ' ': case '\t':
header_state = HDST_LINE1_WHITESPACE;
break;
case '\n':
header_state = HDST_LF;
break;
case '\r':
header_state = HDST_CR;
break;
}
break;
case HDST_LINE1_WHITESPACE:
switch(buf[b]) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
status = buf[b] - '0';
header_state = HDST_LINE1_STATUS;
break;
case '\n':
header_state = HDST_LF;
break;
case '\r':
header_state = HDST_CR;
break;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_LINE1_STATUS:
switch(buf[b]) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
status = status * 10 + buf[b] - '0';
break;
case '\n':
header_state = HDST_LF;
break;
case '\r':
header_state = HDST_CR;
break;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_BOL:
switch(buf[b]) {
case '\n':
header_state = HDST_LF;
break;
case '\r':
header_state = HDST_CR;
break;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_TEXT:
switch(buf[b]) {
case '\n':
header_state = HDST_LF;
break;
case '\r':
header_state = HDST_CR;
break;
}
break;
case HDST_LF:
switch(buf[b]) {
case '\n':
goto end_of_headers;
case '\r':
header_state = HDST_CR;
break;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_CR:
switch(buf[b]) {
case '\n':
header_state = HDST_CRLF;
break;
case '\r':
goto end_of_headers;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_CRLF:
switch(buf[b]) {
case '\n':
goto end_of_headers;
case '\r':
header_state = HDST_CRLFCR;
break;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_CRLFCR:
switch(buf[b]) {
case '\n':
case '\r':
goto end_of_headers;
default:
header_state = HDST_TEXT;
break;
}
break;
}
}
}
end_of_headers:
if(bytes > 0) {
++b;
(void) write(1, &buf[b], bytes - b);
}
for(;;) {
(void) alarm(timeout);
if(protocol == PROTO_HTTPS) {
bytes = SSL_read(ssl, buf, sizeof(buf));
} else {
bytes = read(sockfd, buf, sizeof(buf));
}
if(bytes == 0) {
break;
}
if(bytes < 0) {
show_error("read");
}
(void) write(1, buf, bytes);
}
if(protocol == PROTO_HTTPS) {
SSL_free(ssl);
SSL_CTX_free(ssl_ctx);
}
(void) close(sockfd);
return status;
}
void* malloc_check(size_t size) {
void* ptr = malloc(size);
check(ptr);
return ptr;
}
int open_client_socket(char* hostname, unsigned short port) {
struct addrinfo hints;
char portstr[10];
int gaierr;
struct addrinfo* ai;
struct addrinfo* ai2;
struct addrinfo* aiv4;
struct addrinfo* aiv6;
struct sockaddr_in6 sa;
int sa_len, sock_family, sock_type, sock_protocol;
int sockfd;
(void) memset((void*) &sa, 0, sizeof(sa));
(void) memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
(void) snprintf(portstr, sizeof(portstr), "%d", (int) port);
if((gaierr = getaddrinfo(hostname, portstr, &hints, &ai)) != 0) {
(void) fprintf(stderr, "%s: getaddrinfo %s - %s\n", argv0, hostname, gai_strerror(gaierr));
exit(1);
}
aiv4 = (struct addrinfo*) 0;
aiv6 = (struct addrinfo*) 0;
for(ai2 = ai; ai2 != (struct addrinfo*) 0; ai2 = ai2->ai_next) {
switch(ai2->ai_family) {
case AF_INET:
if(aiv4 == (struct addrinfo*) 0) {
aiv4 = ai2;
}
break;
case AF_INET6:
if(aiv6 == (struct addrinfo*) 0) {
aiv6 = ai2;
}
break;
}
}
if(aiv4 != (struct addrinfo*) 0) {
if(sizeof(sa) < aiv4->ai_addrlen) {
(void) fprintf(stderr, "%s - sockaddr too small (%lu < %lu)\n", hostname, (unsigned long) sizeof(sa), (unsigned long) aiv4->ai_addrlen);
exit(1);
}
sock_family = aiv4->ai_family;
sock_type = aiv4->ai_socktype;
sock_protocol = aiv4->ai_protocol;
sa_len = aiv4->ai_addrlen;
(void) memmove(&sa, aiv4->ai_addr, sa_len);
goto ok;
}
if(aiv6 != (struct addrinfo*) 0) {
if(sizeof(sa) < aiv6->ai_addrlen) {
(void) fprintf(stderr, "%s - sockaddr too small (%lu < %lu)\n", hostname, (unsigned long) sizeof(sa), (unsigned long) aiv6->ai_addrlen);
exit(1);
}
sock_family = aiv6->ai_family;
sock_type = aiv6->ai_socktype;
sock_protocol = aiv6->ai_protocol;
sa_len = aiv6->ai_addrlen;
(void) memmove(&sa, aiv6->ai_addr, sa_len);
goto ok;
}
(void) fprintf(stderr, "%s: no valid address found for host %s\n", argv0, hostname);
exit(1);
ok:
freeaddrinfo(ai);
sockfd = socket(sock_family, sock_type, sock_protocol);
if(sockfd < 0) {
show_error("socket");
}
if(connect(sockfd, (struct sockaddr*) &sa, sa_len) < 0) {
show_error("connect");
}
return sockfd;
}
void postURL(char* url, char* referer, char* user_agent, char* auth_token, int ncookies, char** cookies, char* header_name, char* header_value, char** args, int argc) {
char* s;
int protocol;
char host[2000];
int host_len;
unsigned short port;
char* file = 0;
char* http = "http://";
int http_len = strlen(http);
char* https = "https://";
int https_len = strlen(https);
int proto_len;
if(url == (char*) 0) {
(void) fprintf(stderr, "%s: null URL\n", argv0);
exit(1);
}
if(strncmp(http, url, http_len) == 0) {
proto_len = http_len;
protocol = PROTO_HTTP;
} else if(strncmp(https, url, https_len) == 0) {
proto_len = https_len;
protocol = PROTO_HTTPS;
} else {
(void) fprintf(stderr, "%s: non-http URL\n", argv0);
exit(1);
}
for(s = url + proto_len; *s != '\0' && *s != ':' && *s != '/'; ++s);
host_len = s - url;
host_len -= proto_len;
strncpy(host, url + proto_len, host_len);
host[host_len] = '\0';
if(*s == ':') {
port = (unsigned short) atoi(++s);
while(*s != '\0' && *s != '/') {
++s;
}
} else {
if(protocol == PROTO_HTTPS) {
port = 443;
} else {
port = 80;
}
}
if(*s == '\0') {
file = "/";
} else {
file = s;
}
postURLbyParts(protocol, host, port, file, referer, user_agent, auth_token, ncookies, cookies, header_name, header_value, args, argc);
}
void postURLbyParts(int protocol, char* host, unsigned short port, char* file, char* referer, char* user_agent, char* auth_token, int ncookies, char** cookies, char* header_name, char* header_value, char** args, int argc) {
int sockfd;
SSL_CTX* ssl_ctx = (SSL_CTX*) 0;
SSL* ssl = (SSL*) 0;
char head_buf[20000];
int max_arg, total_bytes;
int multipart, next_arg_is_file;
static const char* const sep = "http_post-content-separator";
char* data_buf;
char* enc_buf;
int head_bytes, data_bytes, i, header_state;
char* eq;
(void) alarm(timeout);
sockfd = open_client_socket(host, port);
if(protocol == PROTO_HTTPS) {
int r;
ssl_ctx = SSL_CTX_new(TLSv1_client_method());
SSL_CTX_set_verify(ssl_ctx, SSL_VERIFY_NONE, 0);
ssl = SSL_new(ssl_ctx);
SSL_set_fd(ssl, sockfd);
r = SSL_connect(ssl);
if(r <= 0) {
(void) fprintf(stderr, "%s: %s - SSL connection failed - %d\n", argv0, url, r);
exit(1);
}
}
multipart = 0;
total_bytes = max_arg = 0;
next_arg_is_file = 0;
for(i = 0; i < argc ; ++i) {
int l = strlen(args[i]);
if(strcmp(args[i], "-f") == 0) {
multipart = 1;
next_arg_is_file = 1;
continue;
}
total_bytes += l;
if(l > max_arg) {
max_arg = l;
}
if(next_arg_is_file) {
eq = strchr(args[i], '=');
if(eq == (char*) 0) {
(void) fprintf(stderr, "%s: missing filename\n", argv0);
exit(1);
} else {
++eq;
total_bytes += file_bytes(eq);
}
next_arg_is_file = 0;
}
}
if(multipart) {
for(i = 0; i < argc ; ++i) {
total_bytes += strlen(sep) * 2 + 100;
}
total_bytes += strlen(sep) * 2;
} else {
total_bytes *= 4;
enc_buf = (char*) malloc_check(max_arg * 4);
}
data_buf = (char*) malloc_check(total_bytes);
if(multipart) {
next_arg_is_file = 0;
data_bytes = 0;
for(i = 0; i < argc; ++i) {
if(strcmp(args[i], "-f") == 0) {
next_arg_is_file = 1;
continue;
}
eq = strchr(args[i], '=');
if(eq == (char*) 0) {
data_bytes += sprintf(&data_buf[data_bytes], "--%s\r\nContent-Disposition: form-data\r\n\r\n%s\r\n", sep, args[i]);
} else {
*eq++ = '\0';
if(next_arg_is_file) {
data_bytes += sprintf(&data_buf[data_bytes], "--%s\r\nContent-Disposition: form-data; name=\"%s\"; filename=\"%s\"\r\n\r\n", sep, args[i], eq);
data_bytes += file_copy(eq, &data_buf[data_bytes]);
data_bytes += sprintf(&data_buf[data_bytes], "\r\n");
next_arg_is_file = 0;
} else {
data_bytes += sprintf(&data_buf[data_bytes], "--%s\r\nContent-Disposition: form-data; name=\"%s\"\r\n\r\n%s\r\n", sep, args[i], eq);
}
}
}
data_bytes += sprintf(&data_buf[data_bytes], "--%s--\r\n", sep);
} else {
data_bytes = 0;
for(i = 0; i < argc ; ++i) {
if(data_bytes > 0) {
data_bytes += sprintf(&data_buf[data_bytes], "&");
}
eq = strchr(args[i], '=');
if(eq == (char*) 0) {
strencode(enc_buf, args[i]);
data_bytes += sprintf(&data_buf[data_bytes], "%s", enc_buf);
} else {
*eq++ = '\0';
strencode(enc_buf, args[i]);
data_bytes += sprintf(&data_buf[data_bytes], "%s=", enc_buf);
strencode(enc_buf, eq);
data_bytes += sprintf(&data_buf[data_bytes], "%s", enc_buf);
}
}
}
(void) alarm(timeout);
head_bytes = snprintf(head_buf, sizeof(head_buf), "POST %s HTTP/1.0\r\n", file);
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Host: %s\r\n", host);
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Content-Length: %d\r\n", data_bytes);
if(referer != (char*) 0) {
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Referer: %s\r\n", referer);
}
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "User-Agent: %s\r\n", user_agent);
if(multipart) {
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Content-type: multipart/form-data; boundary=\"%s\"\r\n", sep);
} else {
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Content-type: application/x-www-form-urlencoded\r\n");
}
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Accept: */*\r\n");
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Accept-Language: en\r\n");
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Accept-Charset: iso-8859-1,*,utf-8\r\n");
if(auth_token != (char*) 0) {
char token_buf[1000];
token_buf[b64_encode((unsigned char*) auth_token, strlen(auth_token), token_buf, sizeof(token_buf))] = '\0';
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Authorization: Basic %s\r\n", token_buf);
}
for(i = 0; i < ncookies; ++i) {
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "Cookie: %s\r\n", cookies[i]);
}
if(header_name != (char*) 0) {
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "%s: %s\r\n", header_name, header_value);
}
head_bytes += snprintf(&head_buf[head_bytes], sizeof(head_buf) - head_bytes, "\r\n");
if(protocol == PROTO_HTTPS) {
(void) SSL_write(ssl, head_buf, head_bytes);
} else {
(void) write(sockfd, head_buf, head_bytes);
}
if(protocol == PROTO_HTTPS) {
(void) SSL_write(ssl, data_buf, data_bytes);
} else {
(void) write(sockfd, data_buf, data_bytes);
}
(void) alarm(timeout);
header_state = HDST_BOL;
for(;;) {
if(protocol == PROTO_HTTPS) {
head_bytes = SSL_read(ssl, head_buf, sizeof(head_buf));
} else {
head_bytes = read(sockfd, head_buf, sizeof(head_buf));
}
if(head_bytes <= 0) {
break;
}
for(i = 0; i < head_bytes; ++i) {
if(verbose) {
(void) write(1, &head_buf[i], 1);
}
switch(header_state) {
case HDST_BOL:
switch(head_buf[i]) {
case '\n':
header_state = HDST_LF;
break;
case '\r':
header_state = HDST_CR;
break;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_TEXT:
switch(head_buf[i]) {
case '\n':
header_state = HDST_LF;
break;
case '\r':
header_state = HDST_CR;
break;
}
break;
case HDST_LF:
switch(head_buf[i]) {
case '\n':
goto end_of_headers;
case '\r':
header_state = HDST_CR;
break;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_CR:
switch(head_buf[i]) {
case '\n':
header_state = HDST_CRLF;
break;
case '\r':
goto end_of_headers;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_CRLF:
switch(head_buf[i]) {
case '\n':
goto end_of_headers;
case '\r':
header_state = HDST_CRLFCR;
break;
default:
header_state = HDST_TEXT;
break;
}
break;
case HDST_CRLFCR:
switch(head_buf[i]) {
case '\n':
case '\r':
goto end_of_headers;
default:
header_state = HDST_TEXT;
break;
}
break;
}
}
}
end_of_headers:
if(head_bytes > 0) {
++i;
(void) write(1, &head_buf[i], head_bytes - i);
}
for(;;) {
(void) alarm(timeout);
if(protocol == PROTO_HTTPS) {
head_bytes = SSL_read(ssl, head_buf, sizeof(head_buf));
} else {
head_bytes = read(sockfd, head_buf, sizeof(head_buf));
}
if(head_bytes == 0) {
break;
}
if(head_bytes < 0) {
show_error("read");
}
(void) write(1, head_buf, head_bytes);
}
if(protocol == PROTO_HTTPS) {
SSL_free(ssl);
SSL_CTX_free(ssl_ctx);
}
(void) close(sockfd);
}
void show_error(char* cause) {
char buf[5000];
(void) sprintf(buf, "%s: %s - %s", argv0, url, cause);
perror(buf);
exit(1);
}
void sigcatch(int sig) {
(void) fprintf(stderr, "%s: %s - timed out\n", argv0, url);
exit(1);
}
void strencode(char* to, char* from) {
int tolen;
for(tolen = 0; *from != '\0'; ++from) {
if(isalnum(*from) || strchr("/_.", *from) != (char*) 0) {
*to = *from;
++to;
++tolen;
} else {
(void) sprintf(to, "%%%02x", (int) *from & 0xff);
to += 3;
tolen += 3;
}
}
*to = '\0';
}
void usage() {
(void) fprintf(stderr, "usage: %s [-c cookie] [-t timeout] [-r referer] [-u user-agent] [-a username:password] [-h header value] [-v] url\n", argv0);
exit(1);
}

79
libweb.h Normal file
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/**
* @PROJECT WebGet Downloader
* @COPYRIGHT See COPYING in the top level directory
* @FILE libweb.h
* @PURPOSE Common Web Library
* @DEVELOPERS Al Globus <globus@nas.nasa.gov>
* Rafal Kupiec <belliash@asiotec.eu.org>
* Jef Poskanzer <jef@mail.acme.com>
*/
#ifndef __LIBWEB_H
#define __LIBWEB_H
#define HDST_LINE1_PROTOCOL 0
#define HDST_LINE1_WHITESPACE 1
#define HDST_LINE1_STATUS 2
#define HDST_BOL 10
#define HDST_TEXT 11
#define HDST_LF 12
#define HDST_CR 13
#define HDST_CRLF 14
#define HDST_CRLFCR 15
#define PROTO_HTTP 0
#define PROTO_HTTPS 1
#define MAX_COOKIES 20
char* argv0;
int timeout;
char* url;
int verbose;
static int b64_decode_table[256] = {
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* 00-0F */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* 10-1F */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63, /* 20-2F */
52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1, /* 30-3F */
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14, /* 40-4F */
15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1, /* 50-5F */
-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40, /* 60-6F */
41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1, /* 70-7F */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* 80-8F */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* 90-9F */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* A0-AF */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* B0-BF */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* C0-CF */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* D0-DF */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* E0-EF */
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 /* F0-FF */
};
static char b64_encode_table[64] = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', /* 0-7 */
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', /* 8-15 */
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', /* 16-23 */
'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', /* 24-31 */
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', /* 32-39 */
'o', 'p', 'q', 'r', 's', 't', 'u', 'v', /* 40-47 */
'w', 'x', 'y', 'z', '0', '1', '2', '3', /* 48-55 */
'4', '5', '6', '7', '8', '9', '+', '/' /* 56-63 */
};
int b64_encode(unsigned char* ptr, int len, char* space, int size);
void check(void* ptr);
off_t file_bytes(const char* filename);
int file_copy(const char* filename, char* buf);
int getURL(char* url, char* referer, char* user_agent, char* auth_token, int ncookies, char** cookies, char* header_name, char* header_value);
int getURLbyParts(int protocol, char* host, unsigned short port, char* file, char* referer, char* user_agent, char* auth_token, int ncookies, char** cookies, char* header_name, char* header_value);
void* malloc_check(size_t size);
int open_client_socket(char* hostname, unsigned short port);
void postURL(char* url, char* referer, char* user_agent, char* auth_token, int ncookies, char** cookies, char* header_name, char* header_value, char** args, int argc);
void postURLbyParts(int protocol, char* host, unsigned short port, char* file, char* referer, char* user_agent, char* auth_token, int ncookies, char** cookies, char* header_name, char* header_value, char** args, int argc);
void show_error(char* cause);
void sigcatch(int sig);
void strencode(char* to, char* from);
void usage();
#endif

89
webget.c Normal file
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/**
* @PROJECT WebGet Downloader
* @COPYRIGHT See COPYING in the top level directory
* @FILE webget.c
* @PURPOSE Web To StdOut Downloader
* @DEVELOPERS Al Globus <globus@nas.nasa.gov>
* Rafal Kupiec <belliash@asiotec.eu.org>
* Jef Poskanzer <jef@mail.acme.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "libweb.h"
int main(int argc, char** argv) {
int argn;
char* referer;
char* user_agent;
char* auth_token;
int ncookies;
char* cookies[MAX_COOKIES];
char* header_name;
char* header_value;
int status;
argv0 = argv[0];
argn = 1;
timeout = 60;
referer = (char*) 0;
user_agent = "http_get";
auth_token = (char*) 0;
ncookies = 0;
header_name = (char*) 0;
header_value = (char*) 0;
verbose = 0;
while(argn < argc && argv[argn][0] == '-' && argv[argn][1] != '\0') {
if(strcmp(argv[argn], "-t") == 0 && argn + 1 < argc) {
++argn;
timeout = atoi(argv[argn]);
} else if(strcmp(argv[argn], "-r") == 0 && argn + 1 < argc) {
++argn;
referer = argv[argn];
} else if(strcmp(argv[argn], "-u") == 0 && argn + 1 < argc) {
++argn;
user_agent = argv[argn];
} else if(strcmp(argv[argn], "-a") == 0 && argn + 1 < argc) {
++argn;
auth_token = argv[argn];
} else if(strcmp(argv[argn], "-c") == 0 && argn + 1 < argc) {
if(ncookies >= MAX_COOKIES) {
(void) fprintf(stderr, "%s: too many cookies\n", argv0);
exit (1);
}
++argn;
cookies[ncookies++] = argv[argn];
} else if(strcmp(argv[argn], "-h") == 0 && argn + 2 < argc) {
++argn;
header_name = argv[argn];
++argn;
header_value = argv[argn];
} else if(strcmp(argv[argn], "-v") == 0) {
verbose = 1;
} else {
usage();
}
++argn;
}
if(argn >= argc) {
usage();
}
url = argv[argn];
++argn;
if(argn != argc) {
usage();
}
(void) signal(SIGALRM, sigcatch);
status = getURL(url, referer, user_agent, auth_token, ncookies, cookies, header_name, header_value);
if(status == 200) {
exit(0);
} else if(status == 0) {
exit(1);
} else {
exit(status);
}
}

79
webpost.c Normal file
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/**
* @PROJECT WebGet Downloader
* @COPYRIGHT See COPYING in the top level directory
* @FILE webpost.c
* @PURPOSE Web POST Operation Dumper
* @DEVELOPERS Al Globus <globus@nas.nasa.gov>
* Rafal Kupiec <belliash@asiotec.eu.org>
* Jef Poskanzer <jef@mail.acme.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "libweb.h"
int main(int argc, char** argv) {
int argn;
char* referer;
char* user_agent;
char* auth_token;
int ncookies;
char* cookies[MAX_COOKIES];
char* header_name;
char* header_value;
argv0 = argv[0];
argn = 1;
timeout = 60;
referer = (char*) 0;
user_agent = "http_post";
auth_token = (char*) 0;
ncookies = 0;
header_name = (char*) 0;
header_value = (char*) 0;
verbose = 0;
while(argn < argc && argv[argn][0] == '-' && argv[argn][1] != '\0') {
if(strcmp(argv[argn], "-t") == 0 && argn + 1 < argc) {
++argn;
timeout = atoi(argv[argn]);
} else if(strcmp(argv[argn], "-r") == 0 && argn + 1 < argc) {
++argn;
referer = argv[argn];
} else if(strcmp(argv[argn], "-u") == 0 && argn + 1 < argc) {
++argn;
user_agent = argv[argn];
} else if(strcmp(argv[argn], "-a") == 0 && argn + 1 < argc) {
++argn;
auth_token = argv[argn];
} else if(strcmp(argv[argn], "-c") == 0 && argn + 1 < argc) {
if(ncookies >= MAX_COOKIES) {
(void) fprintf(stderr, "%s: too many cookies\n", argv0);
exit(1);
}
++argn;
cookies[ncookies++] = argv[argn];
} else if(strcmp(argv[argn], "-h") == 0 && argn + 2 < argc) {
++argn;
header_name = argv[argn];
++argn;
header_value = argv[argn];
} else if(strcmp(argv[argn], "-v") == 0) {
verbose = 1;
} else {
usage();
}
++argn;
}
if(argn >= argc) {
usage();
}
url = argv[argn];
++argn;
(void) signal(SIGALRM, sigcatch);
postURL(url, referer, user_agent, auth_token, ncookies, cookies, header_name, header_value, &(argv[argn]), argc - argn);
exit(0);
}