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analform.c
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C/C++ Source or Header
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1997-09-08
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17KB
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720 lines
/* analform.c 2.1 -- parse the output of the analog form interface */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#ifdef _WIN32 /* so it can pick it up automatically */
#undef WIN32
#define WIN32
#endif
#ifdef WIN32
#define popen _popen
#define pclose _pclose
#endif
extern FILE *popen(); /* to stop gcc complaining */
extern int pclose();
extern int putenv();
/* You must change the next line to indicate where the analog program lives */
#define COMMAND "analog"
#define MAXARGLENGTH (2048) /* should be plenty */
#define OK (0)
#define ERR (-1)
#define STRLENGTH (64)
typedef int flag;
int unhttp(char *url) /* converts back all http special characters */
{
char *tempp;
char tempstr[MAXARGLENGTH];
int i;
/* firstly, change +'s into spaces */
for (i = strlen(url) - 1; i >= 0; i--) {
if (url[i] == '+')
url[i] = ' ';
}
/* secondly change %7E to ~, etc. */
tempp = url;
while ((tempp = strchr(tempp, '%')) != NULL) {
sscanf(tempp + 1, "%2x", &i);
if (i >= 0x20 && i < 0x7F) {
*tempp = i;
strcpy(tempstr, tempp + 3);
strcpy(tempp + 1, tempstr);
/* strcpy(tempp + 1, tempp + 3) may not be safe on all machines
(overlapping arguments) */
}
tempp++;
}
/* Finally, check no unsafe characters. */
for (tempp = url; *tempp != '\0'; tempp++) {
if (*tempp == ';' || *tempp == '\n' || *tempp == '\r' || *tempp == '`' ||
*tempp == '|' || *tempp == '<' || *tempp == '>')
return(ERR);
}
return(OK);
}
void genopts(FILE *thepipe, char name[9], int sortby, char *astr, char *cstr)
{
if (sortby <= 4 && sortby >= 0) {
fprintf(thepipe, "%sSORTBY ", name);
if (sortby == 4)
fprintf(thepipe, "PAGES\n");
else if (sortby == 3)
fprintf(thepipe, "RANDOM\n");
else if (sortby == 2)
fprintf(thepipe, "ALPHABETICAL\n");
else if (sortby == 1)
fprintf(thepipe, "BYTES\n");
else if (sortby == 0)
fprintf(thepipe, "REQUESTS\n");
if (sortby == 1) {
if (cstr[0] != '\0')
fprintf(thepipe, "%sMINBYTES %s\n", name, cstr);
}
else if (sortby == 4) {
if (astr[0] != '\0')
fprintf(thepipe, "%sMINPAGES %s\n", name, astr);
}
else {
if (astr[0] != '\0')
fprintf(thepipe, "%sMINREQS %s\n", name, astr);
}
}
}
int main()
{
extern void exit();
/* the input */
char *argstring;
char *nextarg;
char *nextval;
/* the variables that can be read in */
int xq = 2, mq = 2, Wq = 2, dq = 2, Dq = 2, hq = 2, oq = 2, Sq = 2, tq = 2;
int iq = 2, rq = 2, fq = 2, bq = 2, Bq = 2, cq = 2, eq = 2, Hq = 2, Vq = 0;
char mg = '\0', Wg = '\0', dg = '\0', Dg = '\0', hg = '\0', Hg = '\0';
int os = 6, Ss = 6, is = 6, rs = 6, fs = 6, Bs = 6, bs = 6, ts = 6;
int ou = 0, ch = 3, gr = 2;
char oa[STRLENGTH], Sa[STRLENGTH], ia[STRLENGTH], ra[STRLENGTH];
char ta[STRLENGTH], fa[STRLENGTH], Ba[STRLENGTH], ba[STRLENGTH];
char oc[STRLENGTH], Sc[STRLENGTH], ic[STRLENGTH], rc[STRLENGTH];
char tc[STRLENGTH], fc[STRLENGTH], Bc[STRLENGTH], bc[STRLENGTH];
int dirlevel = 0;
char reqtype = 'd', reqlinks = 'd';
char *from = NULL, *to = NULL;
char *fonly = NULL, *fign = NULL;
char *honly = NULL, *hign = NULL;
char *org = NULL, *home = NULL;
char *logfile = NULL, *reflog = NULL, *browlog = NULL;
char *errlog = NULL, *cachefile = NULL, *cg = NULL, *cm = NULL;
char *TZ = NULL;
char TZenv[STRLENGTH];
int wa = 1;
FILE *thepipe;
int ret;
oa[0] = '\0';
Sa[0] = '\0';
ia[0] = '\0';
ra[0] = '\0';
fa[0] = '\0';
ba[0] = '\0';
Ba[0] = '\0';
oc[0] = '\0';
Sc[0] = '\0';
ic[0] = '\0';
rc[0] = '\0';
fc[0] = '\0';
bc[0] = '\0';
Bc[0] = '\0';
if ((argstring = getenv("QUERY_STRING")) == NULL) {
printf("Content-type: text/plain\n\n");
printf("Error: cannot find environment variable QUERY_STRING\n");
exit(ERR);
}
if (strlen(argstring) >= MAXARGLENGTH - 1) {
fprintf(stderr, "Analog form interface: Security warning on request from %s (%s): QUERY_STRING too long\n",
(getenv("REMOTE_HOST") == NULL)?"unknown host":getenv("REMOTE_HOST"),
(getenv("REMOTE_ADDR") == NULL)?"unknown address":getenv("REMOTE_ADDR"));
printf("Content-type: text/plain\n\n");
printf("Error in QUERY_STRING\n");
exit(ERR);
}
ret = unhttp(argstring);
if (ret == ERR) { /* suspicious characters in argstring */
fprintf(stderr, "Analog form interface: Security warning on request from %s (%s): QUERY_STRING contains unusual characters\n",
(getenv("REMOTE_HOST") == NULL)?"unknown host":getenv("REMOTE_HOST"),
(getenv("REMOTE_ADDR") == NULL)?"unknown address":getenv("REMOTE_ADDR"));
printf("Content-type: text/plain\n\n");
printf("Error in QUERY_STRING\n");
exit(ERR);
}
nextarg = strtok(argstring, "&");
while (nextarg != NULL) {
nextval = strchr(nextarg, '=') + 1;
if (nextval[0] != '\0') {
switch(nextarg[0]) {
case 'b':
switch(nextarg[1]) {
case 'a':
strncpy(ba, nextval, STRLENGTH - 1);
break;
case 'b':
strcpy(ba, "-");
strncat(ba, nextval, STRLENGTH - 2);
break;
case 'c':
strncpy(bc, nextval, STRLENGTH - 1);
break;
case 'd':
strcpy(bc, "-");
strncat(bc, nextval, STRLENGTH - 2);
break;
case 'q':
bq = atoi(nextval);
break;
case 's':
bs = atoi(nextval);
break;
}
break;
case 'B':
switch(nextarg[1]) {
case 'a':
strncpy(Ba, nextval, STRLENGTH - 1);
break;
case 'b':
strcpy(Ba, "-");
strncat(Ba, nextval, STRLENGTH - 2);
break;
case 'c':
strncpy(Bc, nextval, STRLENGTH - 1);
break;
case 'd':
strcpy(Bc, "-");
strncat(Bc, nextval, STRLENGTH - 2);
break;
case 'q':
Bq = atoi(nextval);
break;
case 's':
Bs = atoi(nextval);
break;
}
break;
case 'c':
switch (nextarg[1]) {
case 'g':
cg = nextval;
break;
case 'h':
ch = atoi(nextval);
break;
case 'm':
cm = nextval;
break;
case 'q':
cq = atoi(nextval);
break;
}
break;
case 'd':
switch(nextarg[1]) {
case 'g':
dg = nextval[0];
break;
case 'q':
dq = atoi(nextval);
break;
}
break;
case 'D':
switch(nextarg[1]) {
case 'g':
Dg = nextval[0];
break;
case 'q':
Dq = atoi(nextval);
break;
}
break;
case 'e':
eq = atoi(nextval);
break;
case 'f':
switch(nextarg[1]) {
case 'a':
strncpy(fa, nextval, STRLENGTH - 1);
break;
case 'b':
strcpy(fa, "-");
strncat(fa, nextval, STRLENGTH - 2);
break;
case 'c':
strncpy(fc, nextval, STRLENGTH - 1);
break;
case 'd':
strcpy(fc, "-");
strncat(fc, nextval, STRLENGTH - 2);
break;
case 'i':
fign = nextval;
break;
case 'q':
fq = atoi(nextval);
break;
case 'r':
from = nextval;
break;
case 's':
fs = atoi(nextval);
break;
case 'y':
fonly = nextval;
break;
}
break;
case 'g':
gr = atoi(nextval);
break;
case 'h':
switch(nextarg[1]) {
case 'g':
hg = nextval[0];
break;
case 'i':
hign = nextval;
break;
case 'o':
home = nextval;
break;
case 'q':
hq = atoi(nextval);
break;
case 'y':
honly = nextval;
break;
}
break;
case 'H':
switch(nextarg[1]) {
case 'g':
Hg = nextval[0];
break;
case 'q':
Hq = atoi(nextval);
break;
}
break;
case 'i':
switch(nextarg[1]) {
case 'a':
strncpy(ia, nextval, STRLENGTH - 1);
break;
case 'b':
strcpy(ia, "-");
strncat(ia, nextval, STRLENGTH - 2);
break;
case 'c':
strncpy(ic, nextval, STRLENGTH - 1);
break;
case 'd':
strcpy(ic, "-");
strncat(ic, nextval, STRLENGTH - 2);
break;
case 'e':
dirlevel = atoi(nextval);
break;
case 'q':
iq = atoi(nextval);
break;
case 's':
is = atoi(nextval);
break;
}
break;
case 'l':
switch(nextarg[1]) {
case 'b':
browlog = nextval;
break;
case 'c':
cachefile = nextval;
break;
case 'e':
errlog = nextval;
break;
case 'f':
reflog = nextval;
break;
case 'o':
logfile = nextval;
break;
}
break;
case 'm':
switch(nextarg[1]) {
case 'g':
mg = nextval[0];
break;
case 'q':
mq = atoi(nextval);
break;
}
break;
case 'o':
switch(nextarg[1]) {
case 'a':
strncpy(oa, nextval, STRLENGTH - 1);
break;
case 'b':
strcpy(oa, "-");
strncat(oa, nextval, STRLENGTH - 2);
break;
case 'c':
strncpy(oc, nextval, STRLENGTH - 1);
break;
case 'd':
strcpy(oc, "-");
strncat(oc, nextval, STRLENGTH - 2);
break;
case 'q':
oq = atoi(nextval);
break;
case 'r':
org = nextval;
break;
case 's':
os = atoi(nextval);
break;
case 'u':
ou = atoi(nextval);
break;
}
break;
case 'r':
switch(nextarg[1]) {
case 'a':
strncpy(ra, nextval, STRLENGTH - 1);
break;
case 'b':
strcpy(ra, "-");
strncat(ra, nextval, STRLENGTH - 2);
break;
case 'c':
strncpy(rc, nextval, STRLENGTH - 1);
break;
case 'd':
strcpy(rc, "-");
strncat(rc, nextval, STRLENGTH - 2);
break;
case 'l':
reqlinks = nextval[0];
break;
case 'q':
rq = atoi(nextval);
break;
case 's':
rs = atoi(nextval);
break;
case 't':
reqtype = nextval[0];
break;
}
break;
case 'S':
switch(nextarg[1]) {
case 'a':
strncpy(Sa, nextval, STRLENGTH - 1);
break;
case 'b':
strcpy(Sa, "-");
strncat(Sa, nextval, STRLENGTH - 2);
break;
case 'c':
strncpy(Sc, nextval, STRLENGTH - 1);
break;
case 'd':
strcpy(Sc, "-");
strncat(Sc, nextval, STRLENGTH - 2);
break;
case 'q':
Sq = atoi(nextval);
break;
case 's':
Ss = atoi(nextval);
break;
}
break;
case 't':
switch(nextarg[1]) {
case 'a':
strncpy(ta, nextval, STRLENGTH - 1);
break;
case 'b':
strcpy(ta, "-");
strncat(ta, nextval, STRLENGTH - 2);
break;
case 'c':
strncpy(tc, nextval, STRLENGTH - 1);
break;
case 'd':
strcpy(tc, "-");
strncat(tc, nextval, STRLENGTH - 2);
break;
case 'o':
to = nextval;
break;
case 'q':
tq = atoi(nextval);
break;
case 's':
ts = atoi(nextval);
break;
}
break;
case 'T':
TZ = nextval;
break;
case 'V':
Vq = atoi(nextval);
break;
case 'w':
wa = atoi(nextval);
break;
case 'W':
switch(nextarg[1]) {
case 'g':
Wg = nextval[0];
break;
case 'q':
Wq = atoi(nextval);
break;
}
break;
case 'x':
xq = 1;
break;
}
}
nextarg = strtok((char *)NULL, "&");
}
/* OK, so we've read everything in, now send it to the program */
if (TZ != NULL) {
strcpy(TZenv, "TZ=");
strcat(TZenv, TZ);
putenv(TZenv);
}
if (Vq)
thepipe = stdout;
if (!Vq && (thepipe = popen(COMMAND " +g-", "w")) == NULL) {
printf("Content-type: text/plain\n\n");
printf("Error: cannot start analog program at %s\n", COMMAND);
}
else {
printf("Content-type: text/%s\n\n", (Vq || ou)?"plain":"html");
fflush(stdout);
fprintf(thepipe, "OUTFILE stdout\n");
if (cg != NULL)
fprintf(thepipe, "CONFIGFILE %s\n", cg);
if (xq < 2)
fprintf(thepipe, "GENERAL %s\n", xq?"ON":"OFF");
if (mq < 2)
fprintf(thepipe, "MONTHLY %s\n", mq?"ON":"OFF");
if (Wq < 2)
fprintf(thepipe, "WEEKLY %s\n", Wq?"ON":"OFF");
if (dq < 2)
fprintf(thepipe, "DAILY %s\n", dq?"ON":"OFF");
if (Dq < 2)
fprintf(thepipe, "FULLDAILY %s\n", Dq?"ON":"OFF");
if (hq < 2)
fprintf(thepipe, "HOURLY %s\n", hq?"ON":"OFF");
if (Hq < 2)
fprintf(thepipe, "FULLHOURLY %s\n", Hq?"ON":"OFF");
if (oq < 2)
fprintf(thepipe, "DOMAIN %s\n", oq?"ON":"OFF");
if (Sq < 2)
fprintf(thepipe, "FULLHOSTS %s\n", Sq?"ON":"OFF");
if (iq < 2)
fprintf(thepipe, "DIRECTORY %s\n", iq?"ON":"OFF");
if (rq < 2)
fprintf(thepipe, "REQUEST %s\n", rq?"ON":"OFF");
if (bq < 2)
fprintf(thepipe, "BROWSER %s\n", bq?"ON":"OFF");
if (Bq < 2)
fprintf(thepipe, "FULLBROWSER %s\n", Bq?"ON":"OFF");
if (cq < 2)
fprintf(thepipe, "STATUS %s\n", cq?"ON":"OFF");
if (eq < 2)
fprintf(thepipe, "ERROR %s\n", eq?"ON":"OFF");
if (fq < 2)
fprintf(thepipe, "REFERRER %s\n", fq?"ON":"OFF");
if (tq < 2)
fprintf(thepipe, "FILETYPE %s\n", tq?"ON":"OFF");
if (ch < 3)
fprintf(thepipe, "COUNTHOSTS %s\n",
(ch == 2)?"APPROX":(ch?"ON":"OFF"));
if (gr < 2)
fprintf(thepipe, "GRAPHICAL %s\n", gr?"ON":"OFF");
if (mq && mg != '\0')
fprintf(thepipe, "MONTHGRAPH %c", mg);
if (Wq && Wg != '\0')
fprintf(thepipe, "WEEKGRAPH %c", Wg);
if (hq && hg != '\0')
fprintf(thepipe, "HOURGRAPH %c", hg);
if (Hq && Hg != '\0')
fprintf(thepipe, "FULLHOURGRAPH %c", Hg);
if (dq && dg != '\0')
fprintf(thepipe, "DAYGRAPH %c", dg);
if (Dq && Dg != '\0')
fprintf(thepipe, "FULLDAYGRAPH %c", Dg);
if (oq)
genopts(thepipe, "DOM", os, oa, oc);
if (Sq)
genopts(thepipe, "HOST", Ss, Sa, Sc);
if (iq) {
genopts(thepipe, "DIR", is, ia, ic);
fprintf(thepipe, "DIRLEVEL %d\n", dirlevel);
}
if (rq) {
genopts(thepipe, "REQ", rs, ra, rc);
if (reqtype != 'd')
fprintf(thepipe, "REQINCLUDE %s\n", (reqtype == 'f')?"*":"pages");
if (reqlinks == 'n')
fprintf(thepipe, "LINKEXCLUDE *\n");
else if (reqlinks != 'd')
fprintf(thepipe, "LINKINCLUDE %s\n", (reqlinks == 'f')?"*":"pages");
}
if (bq)
genopts(thepipe, "BROW", bs, ba, bc);
if (Bq)
genopts(thepipe, "FULLBROW", Bs, Ba, Bc);
if (fq)
genopts(thepipe, "REF", fs, fa, fc);
if (tq)
genopts(thepipe, "TYPE", ts, ta, tc);
if (ou < 3)
fprintf(thepipe, "OUTPUT %s\n",
(ou == 2)?"PREFORMATTED":((ou == 1)?"ASCII":"HTML"));
fprintf(thepipe, "WARNINGS %s\n", wa?"ON":"OFF");
if (from != NULL)
fprintf(thepipe, "FROM %s\n", from);
if (to != NULL)
fprintf(thepipe, "TO %s\n", to);
if (org != NULL)
fprintf(thepipe, "HOSTNAME \"%s\"\n", org);
if (home != NULL)
fprintf(thepipe, "HOSTURL %s\n", home);
else
fprintf(thepipe, "HOSTURL -\n");
/* That just leaves the only's and ignore's and logfiles, which are a bit
more complicated as we have to parse them still. Recycle 'nextarg'. */
nextarg = strtok(fonly, " ,"); /* split at spaces and commas */
while (nextarg != NULL) {
fprintf(thepipe, "FILEINCLUDE %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
nextarg = strtok(fign, " ,");
while (nextarg != NULL) {
fprintf(thepipe, "FILEEXCLUDE %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
nextarg = strtok(honly, " ,");
while (nextarg != NULL) {
fprintf(thepipe, "HOSTINCLUDE %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
nextarg = strtok(hign, " ,");
while (nextarg != NULL) {
fprintf(thepipe, "HOSTEXCLUDE %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
nextarg = strtok(browlog, " ,");
while (nextarg != NULL) {
fprintf(thepipe, "BROWLOG %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
nextarg = strtok(errlog, " ,");
while (nextarg != NULL) {
fprintf(thepipe, "ERRLOG %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
nextarg = strtok(reflog, " ,");
while (nextarg != NULL) {
fprintf(thepipe, "REFLOG %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
nextarg = strtok(logfile, " ,");
while (nextarg != NULL) {
fprintf(thepipe, "LOGFILE %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
nextarg = strtok(cachefile, " ,");
while (nextarg != NULL) {
fprintf(thepipe, "CACHEFILE %s\n", nextarg);
nextarg = strtok((char *)NULL, " ,");
}
if (cm != NULL)
fprintf(thepipe, "CONFIGFILE %s\n", cm);
}
if (Vq)
ret = 0;
else {
fflush(thepipe);
ret = pclose(thepipe);
if (ret != 0) {
printf("Analog failed to run or returned an error code.\n");
printf("Maybe your server's error log will give a clue why.\n");
}
}
fflush(stdout);
return(ret);
}