* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * $Id$
*
* Trivial file transfer protocol server.
*
* SUCH DAMAGE.
*/
-#define CURL_NO_OLDIES
-
-#include "setup.h" /* portability help from the lib directory */
+#include "server_setup.h"
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#endif
#include <setjmp.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
+
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#include "curlx.h" /* from the private lib dir */
#include "getpart.h"
#include "util.h"
+#include "server_sockaddr.h"
/* include memdebug.h last */
#include "memdebug.h"
size_t bufsize; /* size of the data in buffer */
char *rptr; /* read pointer into the buffer */
size_t rcount; /* amount of data left to read of the file */
- long num; /* test case number */
+ long testno; /* test case number */
int ofile; /* file descriptor for output file when uploading to us */
+
+ int writedelay; /* number of seconds between each packet */
};
struct formats {
const char *e_msg;
};
+typedef union {
+ struct tftphdr hdr;
+ char storage[PKTSIZE];
+} tftphdr_storage_t;
+
/*
* bf.counter values in range [-1 .. SEGSIZE] represents size of data in the
* bf.buf buffer. Additionally it can also hold flags BF_ALLOC or BF_FREE.
struct bf {
int counter; /* size of data in buffer, or flag */
- char buf[PKTSIZE]; /* room for data packet */
+ tftphdr_storage_t buf; /* room for data packet */
};
#define BF_ALLOC -3 /* alloc'd but not yet filled */
static int newline = 0; /* fillbuf: in middle of newline expansion */
static int prevchar = -1; /* putbuf: previous char (cr check) */
-static char buf[PKTSIZE];
-static char ackbuf[PKTSIZE];
+static tftphdr_storage_t buf;
+static tftphdr_storage_t ackbuf;
-static struct sockaddr_in from;
+static srvr_sockaddr_union_t from;
static curl_socklen_t fromlen;
static curl_socket_t peer = CURL_SOCKET_BAD;
static int timeout;
static int maxtimeout = 5 * TIMEOUT;
-static unsigned short sendblock; /* block count used by sendtftp() */
-static struct tftphdr *sdp; /* data buffer used by sendtftp() */
-static struct tftphdr *sap; /* ack buffer used by sendtftp() */
-
-static unsigned short recvblock; /* block count used by recvtftp() */
-static struct tftphdr *rdp; /* data buffer used by recvtftp() */
-static struct tftphdr *rap; /* ack buffer used by recvtftp() */
-
#ifdef ENABLE_IPV6
static bool use_ipv6 = FALSE;
#endif
static SIGHANDLER_T old_sigterm_handler = SIG_ERR;
#endif
+#if defined(SIGBREAK) && defined(WIN32)
+static SIGHANDLER_T old_sigbreak_handler = SIG_ERR;
+#endif
+
/* var which if set indicates that the program should finish execution */
SIG_ATOMIC_T got_exit_signal = 0;
static struct tftphdr *r_init(void);
-static int readit(struct testcase *test,
- struct tftphdr **dpp,
- int convert);
-
-static int writeit(struct testcase *test,
- struct tftphdr **dpp,
- int ct,
- int convert);
-
static void read_ahead(struct testcase *test, int convert);
static ssize_t write_behind(struct testcase *test, int convert);
static RETSIGTYPE exit_signal_handler(int signum)
{
- int old_errno = ERRNO;
+ int old_errno = errno;
if(got_exit_signal == 0) {
got_exit_signal = 1;
exit_signal = signum;
}
(void)signal(signum, exit_signal_handler);
- SET_ERRNO(old_errno);
+ errno = old_errno;
}
static void install_signal_handlers(void)
#ifdef SIGHUP
/* ignore SIGHUP signal */
if((old_sighup_handler = signal(SIGHUP, SIG_IGN)) == SIG_ERR)
- logmsg("cannot install SIGHUP handler: %s", strerror(ERRNO));
+ logmsg("cannot install SIGHUP handler: %s", strerror(errno));
#endif
#ifdef SIGPIPE
/* ignore SIGPIPE signal */
if((old_sigpipe_handler = signal(SIGPIPE, SIG_IGN)) == SIG_ERR)
- logmsg("cannot install SIGPIPE handler: %s", strerror(ERRNO));
+ logmsg("cannot install SIGPIPE handler: %s", strerror(errno));
#endif
#ifdef SIGINT
/* handle SIGINT signal with our exit_signal_handler */
if((old_sigint_handler = signal(SIGINT, exit_signal_handler)) == SIG_ERR)
- logmsg("cannot install SIGINT handler: %s", strerror(ERRNO));
+ logmsg("cannot install SIGINT handler: %s", strerror(errno));
else
siginterrupt(SIGINT, 1);
#endif
#ifdef SIGTERM
/* handle SIGTERM signal with our exit_signal_handler */
if((old_sigterm_handler = signal(SIGTERM, exit_signal_handler)) == SIG_ERR)
- logmsg("cannot install SIGTERM handler: %s", strerror(ERRNO));
+ logmsg("cannot install SIGTERM handler: %s", strerror(errno));
else
siginterrupt(SIGTERM, 1);
#endif
+#if defined(SIGBREAK) && defined(WIN32)
+ /* handle SIGBREAK signal with our exit_signal_handler */
+ if((old_sigbreak_handler = signal(SIGBREAK, exit_signal_handler)) == SIG_ERR)
+ logmsg("cannot install SIGBREAK handler: %s", strerror(errno));
+ else
+ siginterrupt(SIGBREAK, 1);
+#endif
}
static void restore_signal_handlers(void)
if(SIG_ERR != old_sigterm_handler)
(void)signal(SIGTERM, old_sigterm_handler);
#endif
+#if defined(SIGBREAK) && defined(WIN32)
+ if(SIG_ERR != old_sigbreak_handler)
+ (void)signal(SIGBREAK, old_sigbreak_handler);
+#endif
}
/*
current = 0;
bfs[1].counter = BF_FREE;
nextone = x; /* ahead or behind? */
- return (struct tftphdr *)bfs[0].buf;
+ return &bfs[0].buf.hdr;
}
static struct tftphdr *w_init(void)
if (b->counter == BF_FREE) /* if it's empty */
read_ahead(test, convert); /* fill it */
- *dpp = (struct tftphdr *)b->buf; /* set caller's ptr */
+ *dpp = &b->buf.hdr; /* set caller's ptr */
return b->counter;
}
return;
nextone = !nextone; /* "incr" next buffer ptr */
- dp = (struct tftphdr *)b->buf;
+ dp = &b->buf.hdr;
if (convert == 0) {
/* The former file reading code did this:
/* Update count associated with the buffer, get new buffer from the queue.
Calls write_behind only if next buffer not available.
*/
-static int writeit(struct testcase *test, struct tftphdr **dpp,
+static int writeit(struct testcase *test, struct tftphdr * volatile *dpp,
int ct, int convert)
{
bfs[current].counter = ct; /* set size of data to write */
if (bfs[current].counter != BF_FREE) /* if not free */
write_behind(test, convert); /* flush it */
bfs[current].counter = BF_ALLOC; /* mark as alloc'd */
- *dpp = (struct tftphdr *)bfs[current].buf;
+ *dpp = &bfs[current].buf.hdr;
return ct; /* this is a lie of course */
}
if(!test->ofile) {
char outfile[256];
- snprintf(outfile, sizeof(outfile), "log/upload.%ld", test->num);
+ snprintf(outfile, sizeof(outfile), "log/upload.%ld", test->testno);
test->ofile=open(outfile, O_CREAT|O_RDWR, 0777);
if(test->ofile == -1) {
logmsg("Couldn't create and/or open file %s for upload!", outfile);
count = b->counter; /* remember byte count */
b->counter = BF_FREE; /* reset flag */
- dp = (struct tftphdr *)b->buf;
+ dp = &b->buf.hdr;
nextone = !nextone; /* incr for next time */
writebuf = dp->th_data;
}
/* formerly
putc(c, file); */
- write(test->ofile, &c, 1);
+ if(1 != write(test->ofile, &c, 1))
+ break;
skipit:
prevchar = c;
}
#endif
int j = 0;
char rbuf[PKTSIZE];
- struct sockaddr_in fromaddr;
+ srvr_sockaddr_union_t fromaddr;
curl_socklen_t fromaddrlen;
for (;;) {
#endif
if (i) {
j++;
- fromaddrlen = sizeof(fromaddr);
- (void)recvfrom(f, rbuf, sizeof(rbuf), 0,
- (struct sockaddr *)&fromaddr, &fromaddrlen);
+#ifdef ENABLE_IPV6
+ if(!use_ipv6)
+#endif
+ fromaddrlen = sizeof(fromaddr.sa4);
+#ifdef ENABLE_IPV6
+ else
+ fromaddrlen = sizeof(fromaddr.sa6);
+#endif
+ (void) recvfrom(f, rbuf, sizeof(rbuf), 0,
+ &fromaddr.sa, &fromaddrlen);
}
else
break;
int main(int argc, char **argv)
{
- struct sockaddr_in me;
-#ifdef ENABLE_IPV6
- struct sockaddr_in6 me6;
-#endif /* ENABLE_IPV6 */
-
+ srvr_sockaddr_union_t me;
struct tftphdr *tp;
ssize_t n = 0;
int arg = 1;
#ifdef ENABLE_IPV6
if(!use_ipv6) {
#endif
- memset(&me, 0, sizeof(me));
- me.sin_family = AF_INET;
- me.sin_addr.s_addr = INADDR_ANY;
- me.sin_port = htons(port);
- rc = bind(sock, (struct sockaddr *) &me, sizeof(me));
+ memset(&me.sa4, 0, sizeof(me.sa4));
+ me.sa4.sin_family = AF_INET;
+ me.sa4.sin_addr.s_addr = INADDR_ANY;
+ me.sa4.sin_port = htons(port);
+ rc = bind(sock, &me.sa, sizeof(me.sa4));
#ifdef ENABLE_IPV6
}
else {
- memset(&me6, 0, sizeof(me6));
- me6.sin6_family = AF_INET6;
- me6.sin6_addr = in6addr_any;
- me6.sin6_port = htons(port);
- rc = bind(sock, (struct sockaddr *) &me6, sizeof(me6));
+ memset(&me.sa6, 0, sizeof(me.sa6));
+ me.sa6.sin6_family = AF_INET6;
+ me.sa6.sin6_addr = in6addr_any;
+ me.sa6.sin6_port = htons(port);
+ rc = bind(sock, &me.sa, sizeof(me.sa6));
}
#endif /* ENABLE_IPV6 */
if(0 != rc) {
for (;;) {
fromlen = sizeof(from);
- n = (ssize_t)recvfrom(sock, buf, sizeof(buf), 0,
- (struct sockaddr *)&from, &fromlen);
+#ifdef ENABLE_IPV6
+ if(!use_ipv6)
+#endif
+ fromlen = sizeof(from.sa4);
+#ifdef ENABLE_IPV6
+ else
+ fromlen = sizeof(from.sa6);
+#endif
+ n = (ssize_t)recvfrom(sock, &buf.storage[0], sizeof(buf.storage), 0,
+ &from.sa, &fromlen);
if(got_exit_signal)
break;
if (n < 0) {
set_advisor_read_lock(SERVERLOGS_LOCK);
serverlogslocked = 1;
- from.sin_family = AF_INET;
-
- peer = socket(AF_INET, SOCK_DGRAM, 0);
- if(CURL_SOCKET_BAD == peer) {
- logmsg("socket");
- result = 2;
- break;
+#ifdef ENABLE_IPV6
+ if(!use_ipv6) {
+#endif
+ from.sa4.sin_family = AF_INET;
+ peer = socket(AF_INET, SOCK_DGRAM, 0);
+ if(CURL_SOCKET_BAD == peer) {
+ logmsg("socket");
+ result = 2;
+ break;
+ }
+ if(connect(peer, &from.sa, sizeof(from.sa4)) < 0) {
+ logmsg("connect: fail");
+ result = 1;
+ break;
+ }
+#ifdef ENABLE_IPV6
}
-
- if (connect(peer, (struct sockaddr *)&from, sizeof(from)) < 0) {
- logmsg("connect: fail");
- result = 1;
- break;
+ else {
+ from.sa6.sin6_family = AF_INET6;
+ peer = socket(AF_INET6, SOCK_DGRAM, 0);
+ if(CURL_SOCKET_BAD == peer) {
+ logmsg("socket");
+ result = 2;
+ break;
+ }
+ if(connect(peer, &from.sa, sizeof(from.sa6)) < 0) {
+ logmsg("connect: fail");
+ result = 1;
+ break;
+ }
}
+#endif
+
maxtimeout = 5*TIMEOUT;
- tp = (struct tftphdr *)buf;
+ tp = &buf.hdr;
tp->th_opcode = ntohs(tp->th_opcode);
if (tp->th_opcode == opcode_RRQ || tp->th_opcode == opcode_WRQ) {
memset(&test, 0, sizeof(test));
char *filename, *mode = NULL;
int error;
FILE *server;
+#ifdef USE_WINSOCK
+ DWORD recvtimeout, recvtimeoutbak;
+#endif
/* Open request dump file. */
server = fopen(REQUEST_DUMP, "ab");
if(!server) {
- error = ERRNO;
+ error = errno;
logmsg("fopen() failed with error: %d %s", error, strerror(error));
logmsg("Error opening file: %s", REQUEST_DUMP);
return -1;
cp = (char *)&tp->th_stuff;
filename = cp;
again:
- while (cp < buf + size) {
+ while (cp < &buf.storage[size]) {
if (*cp == '\0')
break;
cp++;
nak(ecode);
return 1;
}
+
+#ifdef USE_WINSOCK
+ recvtimeout = sizeof(recvtimeoutbak);
+ getsockopt(peer, SOL_SOCKET, SO_RCVTIMEO,
+ (char*)&recvtimeoutbak, (int*)&recvtimeout);
+ recvtimeout = TIMEOUT*1000;
+ setsockopt(peer, SOL_SOCKET, SO_RCVTIMEO,
+ (const char*)&recvtimeout, sizeof(recvtimeout));
+#endif
+
if (tp->th_opcode == opcode_WRQ)
recvtftp(test, pf);
else
sendtftp(test, pf);
+#ifdef USE_WINSOCK
+ recvtimeout = recvtimeoutbak;
+ setsockopt(peer, SOL_SOCKET, SO_RCVTIMEO,
+ (const char*)&recvtimeout, sizeof(recvtimeout));
+#endif
+
return 0;
}
+/* Based on the testno, parse the correct server commands. */
+static int parse_servercmd(struct testcase *req)
+{
+ FILE *stream;
+ char *filename;
+ int error;
+
+ filename = test2file(req->testno);
+
+ stream=fopen(filename, "rb");
+ if(!stream) {
+ error = errno;
+ logmsg("fopen() failed with error: %d %s", error, strerror(error));
+ logmsg(" [1] Error opening file: %s", filename);
+ logmsg(" Couldn't open test file %ld", req->testno);
+ return 1; /* done */
+ }
+ else {
+ char *orgcmd = NULL;
+ char *cmd = NULL;
+ size_t cmdsize = 0;
+ int num=0;
+
+ /* get the custom server control "commands" */
+ error = getpart(&orgcmd, &cmdsize, "reply", "servercmd", stream);
+ fclose(stream);
+ if(error) {
+ logmsg("getpart() failed with error: %d", error);
+ return 1; /* done */
+ }
+
+ cmd = orgcmd;
+ while(cmd && cmdsize) {
+ char *check;
+ if(1 == sscanf(cmd, "writedelay: %d", &num)) {
+ logmsg("instructed to delay %d secs between packets", num);
+ req->writedelay = num;
+ }
+ else {
+ logmsg("Unknown <servercmd> instruction found: %s", cmd);
+ }
+ /* try to deal with CRLF or just LF */
+ check = strchr(cmd, '\r');
+ if(!check)
+ check = strchr(cmd, '\n');
+
+ if(check) {
+ /* get to the letter following the newline */
+ while((*check == '\r') || (*check == '\n'))
+ check++;
+
+ if(!*check)
+ /* if we reached a zero, get out */
+ break;
+ cmd = check;
+ }
+ else
+ break;
+ }
+ if(orgcmd)
+ free(orgcmd);
+ }
+
+ return 0; /* OK! */
+}
+
+
/*
* Validate file access.
*/
logmsg("requested test number %ld part %ld", testno, partno);
- test->num = testno;
+ test->testno = testno;
+
+ (void)parse_servercmd(test);
file = test2file(testno);
if(file) {
FILE *stream=fopen(file, "rb");
if(!stream) {
- error = ERRNO;
+ error = errno;
logmsg("fopen() failed with error: %d %s", error, strerror(error));
logmsg("Error opening file: %s", file);
logmsg("Couldn't open test file: %s", file);
{
int size;
ssize_t n;
+ /* This is volatile to live through a siglongjmp */
+ volatile unsigned short sendblock; /* block count */
+ struct tftphdr *sdp; /* data buffer */
+ struct tftphdr *sap; /* ack buffer */
+
sendblock = 1;
#if defined(HAVE_ALARM) && defined(SIGALRM)
mysignal(SIGALRM, timer);
#endif
sdp = r_init();
- sap = (struct tftphdr *)ackbuf;
+ sap = &ackbuf.hdr;
do {
size = readit(test, &sdp, pf->f_convert);
if (size < 0) {
- nak(ERRNO + 100);
+ nak(errno + 100);
return;
}
- sdp->th_opcode = htons((u_short)opcode_DATA);
- sdp->th_block = htons((u_short)sendblock);
+ sdp->th_opcode = htons((unsigned short)opcode_DATA);
+ sdp->th_block = htons(sendblock);
timeout = 0;
#ifdef HAVE_SIGSETJMP
(void) sigsetjmp(timeoutbuf, 1);
#endif
+ if(test->writedelay) {
+ logmsg("Pausing %d seconds before %d bytes", test->writedelay,
+ size);
+ wait_ms(1000*test->writedelay);
+ }
+
send_data:
if (swrite(peer, sdp, size + 4) != size + 4) {
logmsg("write");
#ifdef HAVE_ALARM
alarm(rexmtval); /* read the ack */
#endif
- n = sread(peer, ackbuf, sizeof (ackbuf));
+ n = sread(peer, &ackbuf.storage[0], sizeof(ackbuf.storage));
#ifdef HAVE_ALARM
alarm(0);
#endif
logmsg("read: fail");
return;
}
- sap->th_opcode = ntohs((u_short)sap->th_opcode);
- sap->th_block = ntohs((u_short)sap->th_block);
+ sap->th_opcode = ntohs((unsigned short)sap->th_opcode);
+ sap->th_block = ntohs(sap->th_block);
if (sap->th_opcode == opcode_ERROR) {
logmsg("got ERROR");
static void recvtftp(struct testcase *test, struct formats *pf)
{
ssize_t n, size;
+ /* These are volatile to live through a siglongjmp */
+ volatile unsigned short recvblock; /* block count */
+ struct tftphdr * volatile rdp; /* data buffer */
+ struct tftphdr *rap; /* ack buffer */
+
recvblock = 0;
+ rdp = w_init();
#if defined(HAVE_ALARM) && defined(SIGALRM)
mysignal(SIGALRM, timer);
#endif
- rdp = w_init();
- rap = (struct tftphdr *)ackbuf;
+ rap = &ackbuf.hdr;
do {
timeout = 0;
- rap->th_opcode = htons((u_short)opcode_ACK);
- rap->th_block = htons((u_short)recvblock);
+ rap->th_opcode = htons((unsigned short)opcode_ACK);
+ rap->th_block = htons(recvblock);
recvblock++;
#ifdef HAVE_SIGSETJMP
(void) sigsetjmp(timeoutbuf, 1);
#endif
send_ack:
- if (swrite(peer, ackbuf, 4) != 4) {
+ if (swrite(peer, &ackbuf.storage[0], 4) != 4) {
logmsg("write: fail\n");
goto abort;
}
logmsg("read: fail\n");
goto abort;
}
- rdp->th_opcode = ntohs((u_short)rdp->th_opcode);
- rdp->th_block = ntohs((u_short)rdp->th_block);
+ rdp->th_opcode = ntohs((unsigned short)rdp->th_opcode);
+ rdp->th_block = ntohs(rdp->th_block);
if (rdp->th_opcode == opcode_ERROR)
goto abort;
if (rdp->th_opcode == opcode_DATA) {
size = writeit(test, &rdp, (int)(n - 4), pf->f_convert);
if (size != (n-4)) { /* ahem */
if (size < 0)
- nak(ERRNO + 100);
+ nak(errno + 100);
else
nak(ENOSPACE);
goto abort;
} while (size == SEGSIZE);
write_behind(test, pf->f_convert);
- rap->th_opcode = htons((u_short)opcode_ACK); /* send the "final" ack */
- rap->th_block = htons((u_short)recvblock);
- (void) swrite(peer, ackbuf, 4);
+ rap->th_opcode = htons((unsigned short)opcode_ACK); /* send the "final" ack */
+ rap->th_block = htons(recvblock);
+ (void) swrite(peer, &ackbuf.storage[0], 4);
#if defined(HAVE_ALARM) && defined(SIGALRM)
mysignal(SIGALRM, justtimeout); /* just abort read on timeout */
alarm(rexmtval);
#endif
- n = sread(peer, buf, sizeof(buf)); /* normally times out and quits */
+ /* normally times out and quits */
+ n = sread(peer, &buf.storage[0], sizeof(buf.storage));
#ifdef HAVE_ALARM
alarm(0);
#endif
if(got_exit_signal)
goto abort;
- if (n >= 4 && /* if read some data */
- rdp->th_opcode == opcode_DATA && /* and got a data block */
- recvblock == rdp->th_block) { /* then my last ack was lost */
- (void) swrite(peer, ackbuf, 4); /* resend final ack */
+ if (n >= 4 && /* if read some data */
+ rdp->th_opcode == opcode_DATA && /* and got a data block */
+ recvblock == rdp->th_block) { /* then my last ack was lost */
+ (void) swrite(peer, &ackbuf.storage[0], 4); /* resend final ack */
}
abort:
return;
/*
* Send a nak packet (error message). Error code passed in is one of the
- * standard TFTP codes, or a UNIX errno offset by 100.
+ * standard TFTP codes, or a Unix errno offset by 100.
*/
static void nak(int error)
{
int length;
struct errmsg *pe;
- tp = (struct tftphdr *)buf;
- tp->th_opcode = htons((u_short)opcode_ERROR);
- tp->th_code = htons((u_short)error);
+ tp = &buf.hdr;
+ tp->th_opcode = htons((unsigned short)opcode_ERROR);
+ tp->th_code = htons((unsigned short)error);
for (pe = errmsgs; pe->e_code >= 0; pe++)
if (pe->e_code == error)
break;
pe->e_msg = strerror(error - 100);
tp->th_code = EUNDEF; /* set 'undef' errorcode */
}
- strcpy(tp->th_msg, pe->e_msg);
length = (int)strlen(pe->e_msg);
- tp->th_msg[length] = '\0';
+
+ /* we use memcpy() instead of strcpy() in order to avoid buffer overflow
+ * report from glibc with FORTIFY_SOURCE */
+ memcpy(tp->th_msg, pe->e_msg, length + 1);
length += 5;
- if (swrite(peer, buf, length) != length)
+ if (swrite(peer, &buf.storage[0], length) != length)
logmsg("nak: fail\n");
}
projects / platform / upstream / curl.git / blobdiff