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Code Issues Releases Wiki Activity

removed dead/unused code

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removed use of global variables
removed name space pollutions (added Curl_ prefixes)
This commit is contained in:
Daniel Stenberg 2001-08-17 10:11:46 +00:00
parent ceb8f1cb22
commit a2688b6ca1
1 changed files with 59 additions and 149 deletions
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208
lib/security.c
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@ -1,9 +1,12 @@
/* modified by Martin Hedenfalk <mhe@stacken.kth.se> for use in Curl /* This source code was modified by Martin Hedenfalk <mhe@stacken.kth.se> for
* last modified 2000-09-18 * use in Curl. His latest changes were done 2000-09-18.
* Even more obscurified to merge better into libcurl by Daniel Stenberg. *
*/ * It has since been patched and modified a lot by Daniel Stenberg
* <daniel@haxx.se> to make it better applied to curl conditions, and to make
/* * it not use globals, pollute name space and more. This source code awaits a
* rewrite to work around the paragraph 2 in the BSD licenses as explained
* below.
*
* Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan * Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden). * (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved. * All rights reserved.
@ -33,8 +36,7 @@
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE. */
*/
#include "setup.h" #include "setup.h"
@ -83,24 +85,22 @@ name_to_level(const char *name)
return (enum protection_level)-1; return (enum protection_level)-1;
} }
static struct sec_client_mech *mechs[] = { static struct Curl_sec_client_mech *mechs[] = {
#ifdef KRB5 #ifdef KRB5
&gss_client_mech, /* not supported */
#endif #endif
#ifdef KRB4 #ifdef KRB4
&krb4_client_mech, &Curl_krb4_client_mech,
#endif #endif
NULL NULL
}; };
static struct sec_client_mech *mech;
int int
sec_getc(struct connectdata *conn, FILE *F) Curl_sec_getc(struct connectdata *conn, FILE *F)
{ {
if(conn->sec_complete && conn->data_prot) { if(conn->sec_complete && conn->data_prot) {
char c; char c;
if(sec_read(conn, fileno(F), &c, 1) <= 0) if(Curl_sec_read(conn, fileno(F), &c, 1) <= 0)
return EOF; return EOF;
return c; return c;
} }
@ -159,8 +159,8 @@ sec_get_data(struct connectdata *conn,
return 0; return 0;
else if (b < 0) else if (b < 0)
return -1; return -1;
buf->size = (*mech->decode)(conn->app_data, buf->data, len, buf->size = (conn->mech->decode)(conn->app_data, buf->data, len,
conn->data_prot, conn); conn->data_prot, conn);
buf->index = 0; buf->index = 0;
return 0; return 0;
} }
@ -194,7 +194,7 @@ buffer_write(struct krb4buffer *buf, void *data, size_t len)
} }
int int
sec_read(struct connectdata *conn, int fd, void *buffer, int length) Curl_sec_read(struct connectdata *conn, int fd, void *buffer, int length)
{ {
size_t len; size_t len;
int rx = 0; int rx = 0;
@ -233,7 +233,8 @@ sec_send(struct connectdata *conn, int fd, char *from, int length)
{ {
int bytes; int bytes;
void *buf; void *buf;
bytes = (*mech->encode)(conn->app_data, from, length, conn->data_prot, &buf, conn); bytes = (conn->mech->encode)(conn->app_data, from, length, conn->data_prot,
&buf, conn);
bytes = htonl(bytes); bytes = htonl(bytes);
block_write(fd, &bytes, sizeof(bytes)); block_write(fd, &bytes, sizeof(bytes));
block_write(fd, buf, ntohl(bytes)); block_write(fd, buf, ntohl(bytes));
@ -242,26 +243,11 @@ sec_send(struct connectdata *conn, int fd, char *from, int length)
} }
int int
sec_fflush(struct connectdata *conn, FILE *F) Curl_sec_fflush_fd(struct connectdata *conn, int fd)
{ {
if(conn->data_prot != prot_clear) { if(conn->data_prot != prot_clear) {
if(conn->out_buffer.index > 0){ if(conn->out_buffer.index > 0){
sec_write(conn, fileno(F), Curl_sec_write(conn, fd,
conn->out_buffer.data, conn->out_buffer.index);
conn->out_buffer.index = 0;
}
sec_send(conn, fileno(F), NULL, 0);
}
fflush(F);
return 0;
}
int
sec_fflush_fd(struct connectdata *conn, int fd)
{
if(conn->data_prot != prot_clear) {
if(conn->out_buffer.index > 0){
sec_write(conn, fd,
conn->out_buffer.data, conn->out_buffer.index); conn->out_buffer.data, conn->out_buffer.index);
conn->out_buffer.index = 0; conn->out_buffer.index = 0;
} }
@ -271,7 +257,7 @@ sec_fflush_fd(struct connectdata *conn, int fd)
} }
int int
sec_write(struct connectdata *conn, int fd, char *buffer, int length) Curl_sec_write(struct connectdata *conn, int fd, char *buffer, int length)
{ {
int len = conn->buffer_size; int len = conn->buffer_size;
int tx = 0; int tx = 0;
@ -279,7 +265,7 @@ sec_write(struct connectdata *conn, int fd, char *buffer, int length)
if(conn->data_prot == prot_clear) if(conn->data_prot == prot_clear)
return write(fd, buffer, length); return write(fd, buffer, length);
len -= (*mech->overhead)(conn->app_data, conn->data_prot, len); len -= (conn->mech->overhead)(conn->app_data, conn->data_prot, len);
while(length){ while(length){
if(length < len) if(length < len)
len = length; len = length;
@ -292,7 +278,7 @@ sec_write(struct connectdata *conn, int fd, char *buffer, int length)
} }
int int
sec_vfprintf2(struct connectdata *conn, FILE *f, const char *fmt, va_list ap) Curl_sec_vfprintf2(struct connectdata *conn, FILE *f, const char *fmt, va_list ap)
{ {
char *buf; char *buf;
int ret; int ret;
@ -307,18 +293,18 @@ sec_vfprintf2(struct connectdata *conn, FILE *f, const char *fmt, va_list ap)
} }
int int
sec_fprintf2(struct connectdata *conn, FILE *f, const char *fmt, ...) Curl_sec_fprintf2(struct connectdata *conn, FILE *f, const char *fmt, ...)
{ {
int ret; int ret;
va_list ap; va_list ap;
va_start(ap, fmt); va_start(ap, fmt);
ret = sec_vfprintf2(conn, f, fmt, ap); ret = Curl_sec_vfprintf2(conn, f, fmt, ap);
va_end(ap); va_end(ap);
return ret; return ret;
} }
int int
sec_putc(struct connectdata *conn, int c, FILE *F) Curl_sec_putc(struct connectdata *conn, int c, FILE *F)
{ {
char ch = c; char ch = c;
if(conn->data_prot == prot_clear) if(conn->data_prot == prot_clear)
@ -326,14 +312,14 @@ sec_putc(struct connectdata *conn, int c, FILE *F)
buffer_write(&conn->out_buffer, &ch, 1); buffer_write(&conn->out_buffer, &ch, 1);
if(c == '\n' || conn->out_buffer.index >= 1024 /* XXX */) { if(c == '\n' || conn->out_buffer.index >= 1024 /* XXX */) {
sec_write(conn, fileno(F), conn->out_buffer.data, conn->out_buffer.index); Curl_sec_write(conn, fileno(F), conn->out_buffer.data, conn->out_buffer.index);
conn->out_buffer.index = 0; conn->out_buffer.index = 0;
} }
return c; return c;
} }
int int
sec_read_msg(struct connectdata *conn, char *s, int level) Curl_sec_read_msg(struct connectdata *conn, char *s, int level)
{ {
int len; int len;
char *buf; char *buf;
@ -342,7 +328,7 @@ sec_read_msg(struct connectdata *conn, char *s, int level)
buf = malloc(strlen(s)); buf = malloc(strlen(s));
len = Curl_base64_decode(s + 4, buf); /* XXX */ len = Curl_base64_decode(s + 4, buf); /* XXX */
len = (*mech->decode)(conn->app_data, buf, len, level, conn); len = (conn->mech->decode)(conn->app_data, buf, len, level, conn);
if(len < 0) if(len < 0)
return -1; return -1;
@ -361,7 +347,7 @@ sec_read_msg(struct connectdata *conn, char *s, int level)
/* modified to return how many bytes written, or -1 on error ***/ /* modified to return how many bytes written, or -1 on error ***/
int int
sec_vfprintf(struct connectdata *conn, FILE *f, const char *fmt, va_list ap) Curl_sec_vfprintf(struct connectdata *conn, FILE *f, const char *fmt, va_list ap)
{ {
int ret = 0; int ret = 0;
char *buf; char *buf;
@ -371,9 +357,9 @@ sec_vfprintf(struct connectdata *conn, FILE *f, const char *fmt, va_list ap)
return vfprintf(f, fmt, ap); return vfprintf(f, fmt, ap);
buf = aprintf(fmt, ap); buf = aprintf(fmt, ap);
len = (*mech->encode)(conn->app_data, buf, strlen(buf), len = (conn->mech->encode)(conn->app_data, buf, strlen(buf),
conn->command_prot, &enc, conn->command_prot, &enc,
conn); conn);
free(buf); free(buf);
if(len < 0) { if(len < 0) {
failf(conn->data, "Failed to encode command.\n"); failf(conn->data, "Failed to encode command.\n");
@ -383,60 +369,36 @@ sec_vfprintf(struct connectdata *conn, FILE *f, const char *fmt, va_list ap)
failf(conn->data, "Out of memory base64-encoding.\n"); failf(conn->data, "Out of memory base64-encoding.\n");
return -1; return -1;
} }
#ifdef FTP_SERVER
if(command_prot == prot_safe)
fprintf(f, "631 %s\r\n", buf);
else if(command_prot == prot_private)
fprintf(f, "632 %s\r\n", buf);
else if(command_prot == prot_confidential)
fprintf(f, "633 %s\r\n", buf);
#else
if(conn->command_prot == prot_safe) if(conn->command_prot == prot_safe)
ret = fprintf(f, "MIC %s", buf); ret = fprintf(f, "MIC %s", buf);
else if(conn->command_prot == prot_private) else if(conn->command_prot == prot_private)
ret = fprintf(f, "ENC %s", buf); ret = fprintf(f, "ENC %s", buf);
else if(conn->command_prot == prot_confidential) else if(conn->command_prot == prot_confidential)
ret = fprintf(f, "CONF %s", buf); ret = fprintf(f, "CONF %s", buf);
#endif
free(buf); free(buf);
return ret; return ret;
} }
int int
sec_fprintf(struct connectdata *conn, FILE *f, const char *fmt, ...) Curl_sec_fprintf(struct connectdata *conn, FILE *f, const char *fmt, ...)
{ {
va_list ap; va_list ap;
int ret; int ret;
va_start(ap, fmt); va_start(ap, fmt);
ret = sec_vfprintf(conn, f, fmt, ap); ret = Curl_sec_vfprintf(conn, f, fmt, ap);
va_end(ap); va_end(ap);
return ret; return ret;
} }
/* end common stuff */
#ifdef FTP_SERVER enum protection_level
Curl_set_command_prot(struct connectdata *conn, enum protection_level level)
/* snip */
#else /* FTP_SERVER */
#if 0
void
sec_status(void)
{ {
if(conn->sec_complete){ enum protection_level old = conn->command_prot;
printf("Using %s for authentication.\n", mech->name); conn->command_prot = level;
printf("Using %s command channel.\n", level_to_name(command_prot)); return old;
printf("Using %s data channel.\n", level_to_name(data_prot));
if(buffer_size > 0)
printf("Protection buffer size: %lu.\n",
(unsigned long)buffer_size);
}else{
printf("Not using any security mechanism.\n");
}
} }
#endif
static int static int
sec_prot_internal(struct connectdata *conn, int level) sec_prot_internal(struct connectdata *conn, int level)
@ -486,59 +448,8 @@ sec_prot_internal(struct connectdata *conn, int level)
return 0; return 0;
} }
enum protection_level
set_command_prot(struct connectdata *conn, enum protection_level level)
{
enum protection_level old = conn->command_prot;
conn->command_prot = level;
return old;
}
#if 0
void void
sec_prot(int argc, char **argv) Curl_sec_set_protection_level(struct connectdata *conn)
{
int level = -1;
if(argc < 2 || argc > 3)
goto usage;
if(!sec_complete) {
printf("No security data exchange has taken place.\n");
code = -1;
return;
}
level = name_to_level(argv[argc - 1]);
if(level == -1)
goto usage;
if((*mech->check_prot)(conn->app_data, level)) {
printf("%s does not implement %s protection.\n",
mech->name, level_to_name(level));
code = -1;
return;
}
if(argc == 2 || strncasecmp(argv[1], "data", strlen(argv[1])) == 0) {
if(sec_prot_internal(level) < 0){
code = -1;
return;
}
} else if(strncasecmp(argv[1], "command", strlen(argv[1])) == 0)
set_command_prot(level);
else
goto usage;
code = 0;
return;
usage:
printf("usage: %s [command|data] [clear|safe|confidential|private]\n",
argv[0]);
code = -1;
}
#endif
void
sec_set_protection_level(struct connectdata *conn)
{ {
if(conn->sec_complete && conn->data_prot != conn->request_data_prot) if(conn->sec_complete && conn->data_prot != conn->request_data_prot)
sec_prot_internal(conn, conn->request_data_prot); sec_prot_internal(conn, conn->request_data_prot);
@ -546,7 +457,7 @@ sec_set_protection_level(struct connectdata *conn)
int int
sec_request_prot(struct connectdata *conn, const char *level) Curl_sec_request_prot(struct connectdata *conn, const char *level)
{ {
int l = name_to_level(level); int l = name_to_level(level);
if(l == -1) if(l == -1)
@ -556,10 +467,10 @@ sec_request_prot(struct connectdata *conn, const char *level)
} }
int int
sec_login(struct connectdata *conn) Curl_sec_login(struct connectdata *conn)
{ {
int ret; int ret;
struct sec_client_mech **m; struct Curl_sec_client_mech **m;
ssize_t nread; ssize_t nread;
struct UrlData *data=conn->data; struct UrlData *data=conn->data;
@ -610,7 +521,7 @@ sec_login(struct connectdata *conn)
/* mechanism is supposed to output error string */ /* mechanism is supposed to output error string */
return -1; return -1;
} }
mech = *m; conn->mech = *m;
conn->sec_complete = 1; conn->sec_complete = 1;
conn->command_prot = prot_safe; conn->command_prot = prot_safe;
break; break;
@ -620,19 +531,18 @@ sec_login(struct connectdata *conn)
} }
void void
sec_end(struct connectdata *conn) Curl_sec_end(struct connectdata *conn)
{ {
if (mech != NULL) { if (conn->mech != NULL) {
if(mech->end) if(conn->mech->end)
(*mech->end)(conn->app_data); (conn->mech->end)(conn->app_data);
memset(conn->app_data, 0, mech->size); memset(conn->app_data, 0, conn->mech->size);
free(conn->app_data); free(conn->app_data);
conn->app_data = NULL; conn->app_data = NULL;
} }
conn->sec_complete = 0; conn->sec_complete = 0;
conn->data_prot = (enum protection_level)0; conn->data_prot = (enum protection_level)0;
conn->mech=NULL;
} }
#endif /* FTP_SERVER */
#endif /* KRB4 */ #endif /* KRB4 */