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util.c
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util.c
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/*
* Copyright (c) 2002, 2003, Scott Nicol <[email protected]>
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT 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 SUCH DAMAGE.
*/
#include "util.h"
#include "esniper.h"
#include "auction.h"
#include "buffer.h"
#include <ctype.h>
#include <curl/curl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <time.h>
#if defined(WIN32)
# include <windows.h>
# include <io.h>
# include <sys/timeb.h>
#else
# include <pwd.h>
# include <sys/types.h>
# include <sys/time.h>
# include <termios.h>
# include <unistd.h>
#endif
static void vlog(const char *fmt, va_list arglist);
static void toLowerString(char *s);
static void seedPasswordRandom(void);
static void cryptPassword(char *password);
/*
* various utility functions used in esniper.
*/
/*
* Replacement malloc/realloc/strdup, with error checking
*/
void *
myMalloc(size_t size)
{
void *ret = malloc(size);
if (!ret) {
printLog(stderr, "Cannot allocate memory: %s\n", strerror(errno));
exit(1);
}
return ret;
}
void *
myRealloc(void *buf, size_t size)
{
void *ret = buf ? realloc(buf, size) : malloc(size);
if (!ret) {
printLog(stderr, "Cannot reallocate memory: %s\n", strerror(errno));
exit(1);
}
return ret;
}
char *
myStrdup(const char *s)
{
char *ret;
size_t len;
if (!s)
return NULL;
len = strlen(s);
ret = myMalloc(len + 1);
memcpy(ret, s, len);
ret[len] = '\0';
return ret;
}
char *
myStrndup(const char *s, size_t len)
{
char *ret;
if (!s)
return NULL;
ret = myMalloc(len + 1);
memcpy(ret, s, len);
ret[len] = '\0';
return ret;
}
char *
myStrdup2(const char *s1, const char *s2)
{
char *ret = myMalloc(strlen(s1) + strlen(s2) + 1);
sprintf(ret, "%s%s", s1, s2);
return ret;
}
char *
myStrdup3(const char *s1, const char *s2, const char *s3)
{
char *ret = myMalloc(strlen(s1) + strlen(s2) + strlen(s3) + 1);
sprintf(ret, "%s%s%s", s1, s2, s3);
return ret;
}
char *
myStrdup4(const char *s1, const char *s2, const char *s3, const char *s4)
{
char *ret = myMalloc(strlen(s1) + strlen(s2) + strlen(s3) + strlen(s4) + 1);
sprintf(ret, "%s%s%s%s", s1, s2, s3, s4);
return ret;
}
/*
* Debugging functions.
*/
static FILE *logfile = NULL;
void
logClose()
{
if (logfile) {
fclose(logfile);
logfile = NULL;
}
}
void
logOpen(const auctionInfo *aip, const char *logdir)
{
char *logfilename;
if (aip == NULL)
logfilename = myStrdup2(getProgname(), ".log");
else
logfilename = myStrdup4(getProgname(), ".", aip->auction, ".log");
if (logdir) {
char *tmp = logfilename;
/* not win32 --> *nix */
#if defined(WIN32)
logfilename = myStrdup3(logdir, "/", logfilename);
#else
/*
* Usually the logdir on *nix looks something like this: ~/esniper/logs
* we want it to look (typically) like this: /home/user/esniper/logs/
* (depends on environment HOME variable).
*
* Need to distinguish between * ~/ (i.e. $HOME) and
* ~foo/ (i.e. foo's home directory in /etc/passwd).
*/
if (logdir[0] == '~') {
if (logdir[1] == '\0') {
logfilename = myStrdup3(getenv("HOME"), "/", logfilename);
} else if (logdir[1] == '/') {
logfilename = myStrdup4(getenv("HOME"), logdir+1, "/", logfilename);
} else {
const char *slash = strchr(logdir, '/');
struct passwd *pw;
if (slash) {
size_t namelen = (size_t)(slash - (logdir+1));
char *username = myMalloc(namelen + 1);
strncpy(username, logdir + 1, namelen);
username[namelen] = '\0';
pw = getpwnam(username);
free(username);
} else {
slash = logdir + strlen(logdir);
pw = getpwnam(logdir + 1);
}
if (pw)
logfilename = myStrdup4(pw->pw_dir, slash, "/", logfilename);
else
logfilename = myStrdup3(logdir, "/", logfilename);
}
} else
logfilename = myStrdup3(logdir, "/", logfilename);
#endif
free(tmp);
}
logClose();
if (!(logfile = fopen(logfilename, "a"))) {
/* non-fatal error! */
fprintf(stderr, "Unable to open log file %s: %s\n",
logfilename, strerror(errno));
} else
dlog("### %s version %s ###\n", getProgname(), getVersion());
free(logfilename);
}
/*
* va_list version of log
*/
static void
vlog(const char *fmt, va_list arglist)
{
#if defined(WIN32)
struct timeb tb;
#else
struct timeval tv;
#endif
char timebuf[80]; /* more than big enough */
time_t t;
if (!logfile)
return;
#if defined(WIN32)
ftime(&tb);
t = (time_t)(tb.time);
strftime(timebuf, sizeof(timebuf), "\n*** %Y-%m-%d %H:%M:%S", localtime(&t));
fprintf(logfile, "%s.%03d ", timebuf, tb.millitm);
#else
gettimeofday(&tv, NULL);
t = (time_t)(tv.tv_sec);
strftime(timebuf, sizeof(timebuf), "\n*** %Y-%m-%d %H:%M:%S", localtime(&t));
fprintf(logfile, "%s.%06ld ", timebuf, (long)tv.tv_usec);
#endif
vfprintf(logfile, fmt, arglist);
fflush(logfile);
}
/*
* Debugging log function. Use like printf. Or, better yet, use the log()
* macro (but be sure to enclose the argument list in two parens)
*/
void
dlog(const char *fmt, ...)
{
va_list arglist;
va_start(arglist, fmt);
vlog(fmt, arglist);
va_end(arglist);
}
/*
* Send message to log file and stderr
*/
void
printLog(FILE *fp, const char *fmt, ...)
{
va_list arglist;
if (options.debug && logfile) {
va_start(arglist, fmt);
vlog(fmt, arglist);
va_end(arglist);
}
va_start(arglist, fmt);
vfprintf(fp, fmt, arglist);
va_end(arglist);
fflush(fp);
}
static const char ESNIPER_VERSION_URL[] = "http://esniper.sourceforge.net/version.txt";
/*
* Return current version from esniper.sf.net if it is different from
* program's version, otherwise return NULL.
*/
const char *
checkVersion(void)
{
static int result = -1;
static char *newVersion = NULL;
if (result == -1) {
int i;
memBuf_t *mp = httpGet(ESNIPER_VERSION_URL, NULL);
/* not available */
if (mp == NULL)
return NULL;
newVersion = mp->memory;
for (i = 0; newVersion[i] && newVersion[i] != '\n'; ++i)
;
newVersion[i] = '\0';
result = !strcmp(getVersion(), newVersion);
/* Don't use freeMembuf(), it will also free
* mp->memory, which we are using.
*/
free(mp);
}
return result ? NULL : newVersion;
}
/*
* Request user to file a bug report.
*/
void
bugReport(const char *func, const char *file, int line, auctionInfo *aip, memBuf_t *mp, const optionTable_t *optiontab, const char *fmt, ...)
{
va_list arglist;
const char *version = getVersion();
const char *newVersion = checkVersion();
char *optionlog;
if (newVersion) {
printLog(stdout,
"esniper encountered a bug. "
"It looks like your esniper version is not\n"
"current. You have version %s, the "
"newest version is %s.\n"
"Please go to http://esniper.sf.net/ and update your "
"copy of esniper.\n"
"\n"
"If you want to report this bug, please go to:\n",
version, newVersion);
} else
printLog(stdout, "esniper encountered a bug. Please go to:\n");
printLog(stdout,
"\thttp://sourceforge.net/tracker/?func=add&group_id=45285&atid=442436\n"
"paste this into \"Detailed Description\":\n"
"\tAutomated esniper bug report.\n"
"\t%s version %s\n"
"\t%s\n"
"\tError encountered in function %s in %s line %d\n",
getProgname(), version, curl_version(), func, file, line);
if (aip) {
printLog(stdout,
"\tauction = %s, price = %s, remain = %d\n"
"\tlatency = %d, result = %d, error = %d\n",
nullStr(aip->auction), nullStr(aip->bidPriceStr),
aip->remain, aip->latency, aip->bidResult,
aip->auctionError);
}
if (mp) {
pageInfo_t *pp;
printLog(stdout,
"\tbuf = %p, size = %d, read = %p\n"
"\ttime = %d, offset = %d\n",
mp->memory, mp->size, mp->readptr,
mp->timeToFirstByte, mp->readptr - mp->memory);
if ((pp = getPageInfo(mp))) {
printLog(stdout,
"\tpagename = \"%s\", pageid = \"%s\", srcid = \"%s\"\n",
nullStr(pp->pageName), nullStr(pp->pageId),
nullStr(pp->srcId));
freePageInfo(pp);
}
}
if(optiontab) {
optionlog = logOptionValues(optiontab);
printLog(stdout, "%s", optionlog);
free(optionlog);
}
printf("\t");
if (options.debug && logfile) {
va_start(arglist, fmt);
vlog(fmt, arglist);
va_end(arglist);
}
va_start(arglist, fmt);
vfprintf(stdout, fmt, arglist);
va_end(arglist);
printLog(stdout, "\n");
fflush(stdout); /* in case writing memory contents causes core dump */
if (mp && mp->memory && mp->size) {
static int bugNum = 0;
char tmp[40], *bugname;
FILE *fp;
sprintf(tmp, ".%d.%d.bug.html", (int)getpid(), ++bugNum);
bugname = myStrdup2(getProgname(), tmp);
if ((fp = fopen(bugname, "w"))) {
fwrite(mp->memory, 1, mp->size, fp);
fclose(fp);
printLog(stdout, "then upload and attach %s ", bugname);
} else
printLog(stdout, "\tFailed to create bug file %s: %s\n", bugname, strerror(errno));
free(bugname);
} else {
printLog(stdout, "\tPage content not available.");
}
printLog(stdout, "and click submit.\n");
fflush(stdout);
}
/*
* log a single character
*/
void
logChar(int c)
{
if (!logfile)
return;
if (c == EOF)
fflush(logfile);
else
putc(c, logfile);
}
/* read from file until you see the given character. */
char *
getUntil(memBuf_t *mp, int until)
{
static char *buf = NULL;
static size_t bufsize = 0;
size_t count = 0;
int c;
log(("\n\ngetUntil('%c')\n\n", until));
while ((c = memGetc(mp)) != EOF) {
if (options.debug)
logChar(c);
if ((char)c == until) {
term(buf, bufsize, count);
if (options.debug)
logChar(EOF);
return buf;
}
addchar(buf, bufsize, count, (char)c);
}
if (options.debug)
logChar(EOF);
return NULL;
}
/*
* Return a valid string, even if it is null
*/
const char *
nullStr(const char *s)
{
return s ? s : "(null)";
}
/*
* Return a valid string, even if it is null
*/
const char *
nullEmptyStr(const char *s)
{
return s ? s : "";
}
/*
* Current date/time
*/
char *
timestamp()
{
static char buf[80]; /* much larger than needed */
static time_t saveTime = 0;
time_t t = time(0);
if (t != saveTime) {
struct tm *tmp = localtime(&t);
strftime(buf, (size_t)sizeof(buf), "%c", tmp);
saveTime = t;
}
return buf;
}
/*
* skip rest of line, up to newline. Useful for handling comments.
*/
int
skipline(FILE *fp)
{
int c;
for (c = getc(fp); c != EOF && c != '\n' && c != '\r'; c = getc(fp))
;
return c;
}
/*
* Prompt, with or without echo. Returns malloc()'ed buffer containing
* response.
*/
char *
prompt(const char *p, int noecho)
{
char *buf = NULL;
size_t size = 0, count = 0;
int c;
#if defined(WIN32)
HANDLE in = GetStdHandle(STD_INPUT_HANDLE);
DWORD save, tmp;
if (in == INVALID_HANDLE_VALUE || GetFileType (in) != FILE_TYPE_CHAR)
noecho = 0;
#else
struct termios save, tmp;
#endif
if (!isatty(fileno(stdin))) {
printLog(stderr, "Cannot prompt, stdin is not a terminal\n");
return NULL;
}
fputs(p, stdout);
if (noecho) { /* echo off */
#if defined(WIN32)
GetConsoleMode(in, &save);
tmp = save & (~ENABLE_ECHO_INPUT);
SetConsoleMode(in, tmp);
#else
/*
* echo=ECHO is a silly hack to work around poorly defined constant
* that trips up a poorly implemented warning. tcflag_t is unsigned,
* ECHO is signed. gcc warns if you mix signed and unsigned in an
* expression, but does not warn if you mix in an assignment with a
* constant (assuming constant fits in the type of the variable).
*/
tcflag_t echo = ECHO;
tcgetattr(fileno(stdin), &save);
memcpy(&tmp, &save, sizeof(struct termios));
/* you'll get the warning here if you change ~echo to ~ECHO */
tmp.c_lflag &= ~echo;
tcsetattr(fileno(stdin), TCSANOW, &tmp);
#endif
}
/* read value */
for (c = getc(stdin); c != EOF && c != '\n' && c != '\r'; c = getc(stdin))
addcharinc(buf, size, count, (char)c, (size_t)20);
terminc(buf, size, count, (size_t)20);
if (noecho) { /* echo on */
#if defined(WIN32)
SetConsoleMode(in, save);
#else
tcsetattr(fileno(stdin), TCSANOW, &save);
#endif
putchar('\n');
}
return buf;
}
/*
* Converts string to boolean.
* returns 0 (false), 1 (true), or -1 (invalid). NULL is true.
*/
int
boolValue(const char *value)
{
static const char* boolvalues[] = {
"0", "1",
"n", "y",
"no", "yes",
"off", "on",
"false", "true",
"disabled", "enabled",
NULL
};
int i;
char *buf;
if (!value)
return 1;
buf = myStrdup(value);
toLowerString(buf);
for (i = 0; boolvalues[i]; i++) {
if (!strcmp(buf, boolvalues[i]))
break;
}
free(buf);
return boolvalues[i] ? i % 2 : -1;
}
/*
* Fixup a price to something that atof() and eBay will accept.
* Final string must be in the form 1234.56. Strip off all non-numeric
* characters, convert ',' (non-english decimal) to '.'.
*/
char *
priceFixup(char *price, auctionInfo *aip)
{
size_t len, i, j, start = 0, end, count = 0;
if (!price)
return "";
len = strlen(price);
if (aip && !aip->currency) {
char tmp;
for (; start < len && isalpha((int)price[start]); ++start)
;
tmp = price[start];
price[start] = '\0';
aip->currency = myStrdup(price);
price[start] = tmp;
}
for (; start < len && !isdigit((int)price[start]) && price[start] != ',' && price[start] != '.'; ++start)
;
for (i = start; i < len; ++i) {
if (isdigit((int)price[i]))
continue;
else if (price[i] == ',' || price[i] == '.')
++count;
else
break;
}
end = i;
for (j = 0, i = start; i < end; ++i) {
if (price[i] == ',' || price[i] == '.') {
if (--count == 0)
price[j++] = '.';
} else
price[j++] = price[i];
}
price[j] = '\0';
return price;
}
static void
toLowerString(char *s)
{
for (; *s; ++s)
*s = (char)tolower((int)*s);
}
/*
* Password encrpytion/decryption. xor with pseudo-random one-time pad,
* so password isn't (usually) obvious in memory dump.
*/
static char *passwordPad = NULL;
static size_t passwordLen = 0;
static int needSeed = 1;
static void
seedPasswordRandom(void)
{
if (needSeed) {
#if defined(WIN32)
srand(time(0));
#else
srandom((unsigned int)(getpid() * time(0)));
#endif
needSeed = 0;
}
}
/* create a malloc'ed string filled with '*' (to cover username/password
* in logs)
*/
char *
stars(size_t len)
{
char *s = (char *)myMalloc(len + 1);
memset(s, '*', len);
s[len] = '\0';
return s;
}
void
setUsername(char *username)
{
toLowerString(username);
free(options.username);
options.username = username;
curl_free(options.usernameEscape);
options.usernameEscape = curl_escape(username, (int)strlen(username));
}
void
setPassword(char *password)
{
size_t i, len;
char *escapedPassword;
/* http escape password, clear original */
len = strlen(password);
escapedPassword = curl_escape(password, (int)len);
for (i = 0; i < len; ++i)
password[i] = '\0';
free(password);
password = escapedPassword;
/* crypt with one-time pad */
seedPasswordRandom();
free(passwordPad);
passwordLen = strlen(password) + 1;
passwordPad = (char *)myMalloc(passwordLen);
for (i = 0; i < (int)passwordLen; ++i)
#if defined(WIN32)
passwordPad[i] = (char)rand();
#else
passwordPad[i] = (char)random();
#endif
cryptPassword(password);
curl_free(options.password);
options.password = password;
}
static void
cryptPassword(char *password)
{
int i;
for (i = 0; i < (int)passwordLen; ++i)
password[i] ^= passwordPad[i];
}
char *
getPassword()
{
char *password = (char *)myMalloc(passwordLen);
memcpy(password, options.password, passwordLen);
cryptPassword(password);
return password;
}
void
freePassword(char *password)
{
memset(password, '\0', passwordLen);
free(password);
}
/*
* Cygwin doesn't provide basename and dirname?
*
* Windows-specific code wrapped in ifdefs below, just in case basename
* or dirname is needed on a non-windows system.
*/
#if defined(__CYGWIN__) || defined(WIN32)
char *
basename(char *name)
{
int len;
char *cp;
if (!name)
return name;
len = strlen(name);
if (len == 0)
return (char *)"."; /* cast away const */
cp = name + len - 1;
#if defined(__CYGWIN__) || defined(WIN32)
if (*cp == '/' || *cp == '\\') {
for (; cp >= name && (*cp == '/' || *cp == '\\'); --cp)
#else
if (*cp == '/') {
for (; cp >= name && *cp == '/'; --cp)
#endif
*cp = '\0';
if (cp < name)
return (char *)"/"; /* cast away const */
}
#if defined(__CYGWIN__) || defined(WIN32)
for (; cp >= name && *cp != '/' && *cp != '\\'; --cp)
#else
for (; cp >= name && *cp != '/'; --cp)
#endif
;
return cp + 1;
}
char *
dirname(char *name)
{
int len;
char *cp;
if (!name) return name;
len = strlen(name);
if (len == 0)
return (char *)"."; /* cast away const */
cp = name + len - 1;
#if defined(__CYGWIN__) || defined(WIN32)
if (*cp == '/' || *cp == '\\') {
for (; cp >= name && (*cp == '/' || *cp == '\\'); --cp)
#else
if (*cp == '/') {
for (; cp >= name && *cp == '/'; --cp)
#endif
*cp = '\0';
if (cp <= name)
return (char *)"/"; /* cast away const */
}
#if defined(__CYGWIN__) || defined(WIN32)
for (; cp >= name && *cp != '/' && *cp != '\\'; --cp)
#else
for (; cp >= name && *cp != '/'; --cp)
#endif
;
if (cp < name)
return (char *)"."; /* cast away const */
if (cp == name)
return (char *)"/"; /* cast away const */
*cp = '\0';
return name;
}
#endif
#if defined(WIN32)
/*
** GETOPT PROGRAM AND LIBRARY ROUTINE
**
** I wrote main() and AT&T wrote getopt() and we both put our efforts into
** the public domain via mod.sources.
** Rich $alz
** Mirror Systems
** (mirror!rs, [email protected])
** August 10, 1986
**
** This is the public-domain AT&T getopt(3) code. Hacked by Rich and by Jim.
*/
/*
* Added to esniper to cover for Windows deficiency. Unix versions of esniper
* don't need to use this!
*/
#define ERR(_s, _c) { if (opterr) fprintf (stderr, "%s%s%c\n", argv[0], _s, _c);}
int opterr = 1;
int optind = 1;
int optopt;
char *optarg;
int
getopt(int argc, char *const *argv, const char *opts)
{
static int sp = 1;
register int c;
register char *cp;
if (sp == 1) {
if (optind >= argc ||
argv[optind][0] != '-' || argv[optind][1] == '\0')
return(EOF);
else if (strcmp(argv[optind], "--") == 0) {
optind++;
return(EOF);
}
}
optopt = c = argv[optind][sp];
if (c == ':' || (cp=strchr(opts, c)) == NULL) {
ERR(": illegal option -- ", c);
if (argv[optind][++sp] == '\0') {
optind++;
sp = 1;
}
return('?');
}
if (*++cp == ':') {
if (argv[optind][sp+1] != '\0')
optarg = &argv[optind++][sp+1];
else if (++optind >= argc) {
ERR(": option requires an argument -- ", c);
sp = 1;
return('?');
} else
optarg = argv[optind++];
sp = 1;
} else {
if (argv[optind][++sp] == '\0') {
sp = 1;
optind++;
}
optarg = NULL;
}
return(c);
}
#endif