/*
** statform 1.0
** A getstats form interface
** By Brian Behlendorf, gw@wired.com
** Hacked on 4/15/94 by Kevin Hughes, kevinh@eit.com
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/*
WARNING! THIS FORM HAS A SECURITY BUG!
Please use the new version available at:

	http://wsk.eit.com/

Thanks!

	-- Kevin
*/

/* User-definable options below */

char LOGFILE[80] = "/usr/local/httpd/logs/access_log";
	/*
	** The full path to your log file. This is used as a default.
	*/
char ROOTDIR[80] = "/usr/local/www/";
	/*
	** The top of your Web (or Gopher) tree.
	*/
char GETSTATS[80] = "/usr/local/httpd/cgi-bin/getstats";
	/*
	** The full path to getstats, version 1.2 or better.
	*/

/* End of user-definable options */

#define SUBJECT "Getstats results"
#define MAXENTRIES 10000
#define MAXCMDLEN 1024

typedef struct {
	char *name;
	char *val;
} entry;

char command[MAXCMDLEN];

char *makeword(char *line, char stop);
char *fmakeword(FILE *f, char stop, int *len);
char x2c(char *what);
void unescape_url(char *url);
void plustospace(char *str);

main(int argc, char *argv[])
{
	entry entries[MAXENTRIES];
	register int x, m = 0;
	int cl, invalid = 0, didroot = 0, didhtml = 0;
	
	char protocol;

	if (strcmp(getenv("REQUEST_METHOD"), "POST")) {
		printf("We can't do much with a blank subscription card, ");
		printf("can we?\n");
		exit(1);
	}

	if (strcmp(getenv("CONTENT_TYPE"),
	"application/x-www-form-urlencoded")) {
		printf("This script can only be used to decode form ");
		printf("results.\n");
		exit(1);
	}

	cl = atoi(getenv("CONTENT_LENGTH"));
	
	sprintf(command, "%s ", GETSTATS);

	for(x = 0; cl && (!feof(stdin)); x++) {
		m = x;
		entries[x].val = fmakeword(stdin, '&', &cl);
		plustospace(entries[x].val);
		unescape_url(entries[x].val);
		entries[x].name = makeword(entries[x].val,'=');

		if (!strcmp(entries[x].name, "protocol")) {
			protocol = entries[x].val[0];

			if (protocol == 'G') 
				sprintf(command, "%s -G", command);
			else if (protocol == 'N')
				sprintf(command, "%s -N", command);
			else if (protocol == 'C')
				sprintf(command, "%s -C", command);
			else if (protocol == 'P')
				sprintf(command, "%s -P", command);
			else if (protocol == 'M')
				sprintf(command, "%s -A", command);
			else if (protocol == 'U')
				sprintf(command, "%s -O", command);
		}

		if (!didroot) {
			sprintf(command, "%s -dr %s", command, ROOTDIR);
			didroot = 1;
		}

		if (!strcmp(entries[x].name, "logfilename"))
			if (strlen(entries[x].val)) 
				sprintf(command, "%s -l %s", command,
				entries[x].val);
			else 
				sprintf(command, "%s -l %s", command, LOGFILE);

		if (!strcmp(entries[x].name, "common") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -M", command);

		if (!strcmp(entries[x].name, "concise") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -c", command);

		if (!strcmp(entries[x].name, "toplines") && 
		strlen(entries[x].val))
			sprintf(command, "%s -t %s ", command, entries[x].val);

		if (!strcmp(entries[x].name, "all") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -a ", command);

		if (!strcmp(entries[x].name, "monthly") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -m ", command);

		if (!strcmp(entries[x].name, "weekly") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -w ", command);

		if (!strcmp(entries[x].name, "daysweek") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -ds ", command);

		if (!strcmp(entries[x].name, "daily") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -d ", command);

		if (!strcmp(entries[x].name, "hoursday") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -hs ", command);

		if (!strcmp(entries[x].name, "hourly") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -h ", command);

		if (!strcmp(entries[x].name, "full-hostname") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -f ", command);

		if (!strcmp(entries[x].name, "full-access") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -fa ", command);

		if (!strcmp(entries[x].name, "full-lastaccess") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -fd ", command);

		if (!strcmp(entries[x].name, "full-bytes") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -fb ", command);

		if (!strcmp(entries[x].name, "request-name") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -r ", command);

		if (!strcmp(entries[x].name, "request-accesses") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -ra ", command);

		if (!strcmp(entries[x].name, "request-lastaccesses") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -rd ", command);

		if (!strcmp(entries[x].name, "request-bytes") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -rb ", command);

		if (!strcmp(entries[x].name, "request-filesize") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -rf ", command);

		if (!strcmp(entries[x].name, "domain-name") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -dn ", command);

		if (!strcmp(entries[x].name, "domain-requests") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -da ", command);

		if (!strcmp(entries[x].name, "domain-lastaccesses") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -dd ", command);

		if (!strcmp(entries[x].name, "domain-bytes") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -db ", command);

		if (!strcmp(entries[x].name, "domain-sub") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -du ", command);

		if (!strcmp(entries[x].name, "filetree") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -dt ", command);

		if (!strcmp(entries[x].name, "error") && 
		!strcmp(entries[x].val, "on"))
			sprintf(command, "%s -e ", command);

		if (!strcmp(entries[x].name, "samask"))
			if (strlen(entries[x].val) != 0)
				sprintf(command, "%s -sa \"%s\"", command,
				entries[x].val);
			
		if (!strcmp(entries[x].name, "ssmask"))
			if (strlen(entries[x].val) != 0)
				sprintf(command, "%s -ss \"%s\"", command,
				entries[x].val);
			
		if (!strcmp(entries[x].name, "srmask"))
			if (strlen(entries[x].val) != 0)
				sprintf(command, "%s -sr \"%s\"", command,
				entries[x].val);
			
		if (!strcmp(entries[x].name, "spmask"))
			if (strlen(entries[x].val) != 0)
				sprintf(command, "%s -sp \"%s\"", command,
				entries[x].val);
			
		if (!strcmp(entries[x].name, "sdmask"))
			if (strlen(entries[x].val) != 0)
				sprintf(command, "%s -sd \"%s\"", command,
				entries[x].val);
			
		if (!strcmp(entries[x].name, "shmask"))
			if (strlen(entries[x].val) != 0)
				sprintf(command, "%s -sh \"%s\"", command,
				entries[x].val);
			
		if (!strcmp(entries[x].name, "swmask"))
			if (strlen(entries[x].val) != 0)
				sprintf(command, "%s -sw \"%s\"", command,
				entries[x].val);
			
		if (!strcmp(entries[x].name, "mailme") && 
		strlen(entries[x].val) != 0) {
			sprintf(command, "%s | /usr/ucb/mail -s \"%s\" %s",
			command, SUBJECT, entries[x].val);
			printf("Content-type: text/html\n\n");
			printf("<title>It's in the mail...</title>\n<p>\n");
			printf("<h1>Your log request is being mailed to ");
			printf("you.</h1>\n");
			printf("The following command was executed:\n");
			printf("<p>\n<code>%s</code>\n", command);
		}
		else if (!strcmp(entries[x].name, "mailme") &&
		strlen(entries[x].val) == 0 && !didhtml) {
			sprintf(command, "%s -ht", command);
			didhtml = 1;
		}
	}
	sprintf(command, "%s &\n", command);
	system(command);

	exit(0);
}

/* util.c from NCSA included below */

#define LF 10
#define CR 13

void getword(char *word, char *line, char stop) {
    int x = 0,y;

    for(x=0;((line[x]) && (line[x] != stop));x++)
        word[x] = line[x];

    word[x] = '\0';
    if(line[x]) ++x;
    y=0;

    while(line[y++] = line[x++]);
}

char *makeword(char *line, char stop) {
    int x = 0,y;
    char *word = (char *) malloc(sizeof(char) * (strlen(line) + 1));

    for(x=0;((line[x]) && (line[x] != stop));x++)
        word[x] = line[x];

    word[x] = '\0';
    if(line[x]) ++x;
    y=0;

    while(line[y++] = line[x++]);
    return word;
}

char *fmakeword(FILE *f, char stop, int *cl) {
    int wsize;
    char *word;
    int ll;

    wsize = 102400;
    ll=0;
    word = (char *) malloc(sizeof(char) * (wsize + 1));

    while(1) {
        word[ll] = (char)fgetc(f);
        if(ll==wsize) {
            word[ll+1] = '\0';
            wsize+=102400;
            word = (char *)realloc(word,sizeof(char)*(wsize+1));
        }
        --(*cl);
        if((word[ll] == stop) || (feof(f)) || (!(*cl))) {
            if(word[ll] != stop) ll++;
            word[ll] = '\0';
            return word;
        }
        ++ll;
    }
}

char x2c(char *what) {
    register char digit;

    digit = (what[0] >= 'A' ? ((what[0] & 0xdf) - 'A')+10 : (what[0] - '0'));
    digit *= 16;
    digit += (what[1] >= 'A' ? ((what[1] & 0xdf) - 'A')+10 : (what[1] - '0'));
    return(digit);
}

void unescape_url(char *url) {
    register int x,y;

    for(x=0,y=0;url[y];++x,++y) {
        if((url[x] = url[y]) == '%') {
            url[x] = x2c(&url[y+1]);
            y+=2;
        }
    }
    url[x] = '\0';
}

void plustospace(char *str) {
    register int x;

    for(x=0;str[x];x++) if(str[x] == '+') str[x] = ' ';
}

int rind(char *s, char c) {
    register int x;
    for(x=strlen(s) - 1;x != -1; x--)
        if(s[x] == c) return x;
    return -1;
}

int getline(char *s, int n, FILE *f) {
    register int i=0;

    while(1) {
        s[i] = (char)fgetc(f);

        if(s[i] == CR)
            s[i] = fgetc(f);

        if((s[i] == 0x4) || (s[i] == LF) || (i == (n-1))) {
            s[i] = '\0';
            return (feof(f) ? 1 : 0);
        }
        ++i;
    }
}

void send_fd(FILE *f, FILE *fd)
{
    int num_chars=0;
    char c;

    while (1) {
        c = fgetc(f);
        if(feof(f))
            return;
        fputc(c,fd);
    }
}