Initial revision

1 files changed, 697 insertions, 0 deletions

diff --git a/cookie.c b/cookie.c
new file mode 100644
index 0000000..43e55cd
--- /dev/null
+++ b/cookie.c
@@ -0,0 +1,697 @@
+/* $Id: cookie.c,v 1.1 2001/11/08 05:14:17 a-ito Exp $ */
+
+/*
+ * References for version 0 cookie:                                  
+ *   [NETACAPE] http://www.netscape.com/newsref/std/cookie_spec.html
+ *
+ * References for version 1 cookie:                                  
+ *   [RFC 2109] http://www.ics.uci.edu/pub/ietf/http/rfc2109.txt
+ *   [DRAFT 12] http://www.ics.uci.edu/pub/ietf/http/draft-ietf-http-state-man-mec-12.txt
+ */
+
+#include "fm.h"
+#include "html.h"
+
+#ifdef __EMX__
+#include <strings.h>
+#endif
+
+#ifdef USE_COOKIE
+#include <time.h>
+#include "local.h"
+#include "regex.h"
+#include "myctype.h"
+
+static int is_saved = 1;
+
+#define contain_no_dots(p, ep) (total_dot_number((p),(ep),1)==0)
+
+static int
+total_dot_number(char *p, char *ep, int max_count)
+{
+    int count = 0;
+    if (!ep)
+	ep = p + strlen(p);
+
+    for (; p < ep && count < max_count; p++) {
+	if (*p == '.')
+	    count++;
+    }
+    return count;
+}
+
+
+static char *
+domain_match(char *host, char *domain)
+{
+    int m0, m1;
+
+    /* [RFC 2109] s. 2, "domain-match", case 1
+     * (both are IP and identical)
+     */
+    regexCompile("[0-9][0-9]*\\.[0-9][0-9]*\\.[0-9][0-9]*\\.[0-9][0-9]*", 0);
+    m0 = regexMatch(host, 0, 1);
+    m1 = regexMatch(domain, 0, 1);
+    if (m0 && m1) {
+	if (strcasecmp(host, domain) == 0)
+	    return host;
+    }
+    else if (!m0 && !m1) {
+	int offset;
+	char *domain_p;
+	/*
+	 * "." match all domains (w3m only),
+	 * and ".local" match local domains ([DRAFT 12] s. 2)
+	 */
+	if (strcasecmp(domain, ".") == 0 ||
+	    strcasecmp(domain, ".local") == 0) {
+	    offset = strlen(host);
+	    domain_p = &host[offset];
+	    if (domain[1] == '\0' || contain_no_dots(host, domain_p))
+		return domain_p;
+	}
+	/* [RFC 2109] s. 2, cases 2, 3 */
+	else {
+	    offset = (domain[0] != '.') ? 0 : strlen(host) - strlen(domain);
+	    domain_p = &host[offset];
+	    if (offset >= 0 && strcasecmp(domain_p, domain) == 0)
+		return domain_p;
+	}
+    }
+    return NULL;
+}
+
+
+static struct portlist *
+make_portlist(Str port)
+{
+    struct portlist *first = NULL, *pl;
+    char *p;
+    Str tmp = Strnew();
+
+    p = port->ptr;
+    while (*p) {
+	while (*p && !IS_DIGIT(*p))
+	    p++;
+	Strclear(tmp);
+	while (*p && IS_DIGIT(*p))
+	    Strcat_char(tmp, *(p++));
+	if (tmp->length == 0)
+	    break;
+	pl = New(struct portlist);
+	pl->port = atoi(tmp->ptr);
+	pl->next = first;
+	first = pl;
+    }
+    return first;
+}
+
+static Str
+portlist2str(struct portlist *first)
+{
+    struct portlist *pl;
+    Str tmp;
+
+    tmp = Sprintf("%d", first->port);
+    for (pl = first->next; pl; pl = pl->next)
+	Strcat(tmp, Sprintf(", %d", pl->port));
+    return tmp;
+}
+
+static int
+port_match(struct portlist *first, int port)
+{
+    struct portlist *pl;
+
+    for (pl = first; pl; pl = pl->next) {
+	if (pl->port == port)
+	    return 1;
+    }
+    return 0;
+}
+
+static void
+check_expired_cookies(void)
+{
+    struct cookie *p, *p1;
+    time_t now = time(NULL);
+
+    if (!First_cookie)
+	return;
+
+    if (First_cookie->expires != (time_t) - 1 &&
+	First_cookie->expires < now) {
+	if (!(First_cookie->flag & COO_DISCARD))
+	    is_saved = 0;
+	First_cookie = First_cookie->next;
+    }
+
+    for (p = First_cookie; p && p->next; p = p1) {
+	p1 = p->next;
+	if (p1->expires != (time_t) - 1 && p1->expires < now) {
+	    if (!(p1->flag & COO_DISCARD))
+		is_saved = 0;
+	    p->next = p1->next;
+	    p1 = p;
+	}
+    }
+}
+
+static Str
+make_cookie(struct cookie *cookie)
+{
+    Str tmp = Strdup(cookie->name);
+    Strcat_char(tmp, '=');
+    Strcat(tmp, cookie->value);
+    return tmp;
+}
+
+static int
+match_cookie(ParsedURL * pu, struct cookie *cookie)
+{
+    char *domainname = (cookie->version == 0) ? FQDN(pu->host) : pu->host;
+
+    if (!domainname)
+	return 0;
+
+    if (!domain_match(domainname, cookie->domain->ptr))
+	return 0;
+    if (strncmp(cookie->path->ptr, pu->file, cookie->path->length) != 0)
+	return 0;
+#ifdef USE_SSL
+    if (cookie->flag & COO_SECURE && pu->scheme != SCM_HTTPS)
+	return 0;
+#else				/* not USE_SSL */
+    if (cookie->flag & COO_SECURE)
+	return 0;
+#endif				/* not USE_SSL */
+    if (cookie->portl && !port_match(cookie->portl, pu->port))
+	return 0;
+
+    return 1;
+}
+
+struct cookie *
+get_cookie_info(Str domain, Str path, Str name)
+{
+    struct cookie *p;
+
+    for (p = First_cookie; p; p = p->next) {
+	if (Strcasecmp(p->domain, domain) == 0 &&
+	    Strcmp(p->path, path) == 0 &&
+	    Strcasecmp(p->name, name) == 0)
+	    return p;
+    }
+    return NULL;
+}
+
+Str
+find_cookie(ParsedURL * pu)
+{
+    Str tmp;
+    struct cookie *p, *p1, *fco = NULL;
+    int version = 0;
+
+    check_expired_cookies();
+    for (p = First_cookie; p; p = p->next) {
+	if (p->flag & COO_USE && match_cookie(pu, p)) {
+	    for (p1 = fco; p1 && Strcasecmp(p1->name, p->name); p1 = p1->next);
+	    if (p1)
+		continue;
+	    p1 = New(struct cookie);
+	    bcopy(p, p1, sizeof(struct cookie));
+	    p1->next = fco;
+	    fco = p1;
+	    if (p1->version > version)
+		version = p1->version;
+	}
+    }
+
+    if (!fco)
+	return NULL;
+
+    tmp = Strnew();
+    if (version > 0)
+	Strcat(tmp, Sprintf("$Version=\"%d\"; ", version));
+
+    Strcat(tmp, make_cookie(fco));
+    for (p1 = fco->next; p1; p1 = p1->next) {
+	Strcat_charp(tmp, "; ");
+	Strcat(tmp, make_cookie(p1));
+	if (version > 0) {
+	    if (p1->flag & COO_PATH)
+		Strcat(tmp, Sprintf("; $Path=\"%s\"", p1->path->ptr));
+	    if (p1->flag & COO_DOMAIN)
+		Strcat(tmp, Sprintf("; $Domain=\"%s\"", p1->domain->ptr));
+	    if (p1->portl)
+		Strcat(tmp, Sprintf("; $Port=\"%s\"", portlist2str(p1->portl)));
+	}
+    }
+    return tmp;
+}
+
+char *special_domain[] =
+{
+    ".com", ".edu", ".gov", ".mil", ".net", ".org", ".int", NULL};
+
+int
+add_cookie(ParsedURL * pu, Str name, Str value,
+	   time_t expires, Str domain, Str path,
+	   int flag, Str comment, int version,
+	   Str port, Str commentURL)
+{
+    struct cookie *p;
+    char *domainname = (version == 0) ? FQDN(pu->host) : pu->host;
+    Str odomain = domain, opath = path;
+    struct portlist *portlist = NULL;
+    int use_security = !(flag & COO_OVERRIDE);
+
+#define COOKIE_ERROR(err) if(!((err) & COO_OVERRIDE_OK) || use_security) return (err)
+
+#ifdef DEBUG
+    fprintf(stderr, "host: [%s, %s] %d\n", pu->host, pu->file, flag);
+    fprintf(stderr, "cookie: [%s=%s]\n", name->ptr, value->ptr);
+    fprintf(stderr, "expires: [%s]\n", asctime(gmtime(&expires)));
+    if (domain)
+	fprintf(stderr, "domain: [%s]\n", domain->ptr);
+    if (path)
+	fprintf(stderr, "path: [%s]\n", path->ptr);
+    fprintf(stderr, "version: [%d]\n", version);
+    if (port)
+	fprintf(stderr, "port: [%s]\n", port->ptr);
+#endif				/* DEBUG */
+    /* [RFC 2109] s. 4.3.2 case 2; but this (no request-host) shouldn't happen */
+    if (!domainname)
+ 	return COO_ENODOT;
+
+    if (domain) {
+	char *dp;
+	/* [DRAFT 12] s. 4.2.2 (does not apply in the case that
+	 * host name is the same as domain attribute for version 0
+	 * cookie)
+	 * I think that this rule has almost the same effect as the
+	 * tail match of [NETSCAPE].
+	 */
+	if (domain->ptr[0] != '.' &&
+	    (version > 0 || strcasecmp(domainname, domain->ptr) != 0))
+	    domain = Sprintf(".%s", domain->ptr);
+
+	if (version == 0) {
+	    /* [NETSCAPE] rule */
+	    int n = total_dot_number(domain->ptr,
+				     domain->ptr + domain->length,
+				     3);
+	    if (n < 2) {
+		COOKIE_ERROR(COO_ESPECIAL);
+	    } else if (n == 2) {
+		char **sdomain;
+		int ok = 0;
+		for (sdomain = special_domain; !ok && *sdomain; sdomain++) {
+		    int offset = domain->length - strlen(*sdomain);
+		    if (offset >= 0 &&
+			strcasecmp(*sdomain, &domain->ptr[offset]) == 0)
+			ok = 1;
+		}
+		if (!ok)
+		    COOKIE_ERROR(COO_ESPECIAL);
+	    }
+	} else {
+	    /* [DRAFT 12] s. 4.3.2 case 2 */
+	    if (strcasecmp(domain->ptr, ".local") != 0 &&
+		contain_no_dots(&domain->ptr[1], &domain->ptr[domain->length]))
+		COOKIE_ERROR(COO_ENODOT);
+	}
+
+	/* [RFC 2109] s. 4.3.2 case 3 */
+	if (!(dp = domain_match(domainname, domain->ptr)))
+	    COOKIE_ERROR(COO_EDOM);
+	/* [RFC 2409] s. 4.3.2 case 4 */
+	/* Invariant: dp contains matched domain */
+	if (version > 0 && !contain_no_dots(domainname, dp))
+	    COOKIE_ERROR(COO_EBADHOST);
+    }
+    if (path) {
+	/* [RFC 2109] s. 4.3.2 case 1 */
+  	if (version > 0 && strncmp(path->ptr, pu->file, path->length) != 0)
+	    COOKIE_ERROR(COO_EPATH);
+    }
+    if (port) {
+	/* [DRAFT 12] s. 4.3.2 case 5 */
+	portlist = make_portlist(port);
+	if (portlist && !port_match(portlist, pu->port))
+	    COOKIE_ERROR(COO_EPORT);
+    }
+
+    if (!domain)
+	domain = Strnew_charp(domainname);
+    if (!path) {
+	path = Strnew_charp(pu->file);
+	while (path->length > 0 && Strlastchar(path) != '/')
+	    Strshrink(path, 1);
+	if (Strlastchar(path) == '/')
+	    Strshrink(path, 1);
+    }
+
+    p = get_cookie_info(domain, path, name);
+    if (!p) {
+	p = New(struct cookie);
+	p->flag = 0;
+	if (default_use_cookie)
+	    p->flag |= COO_USE;
+	p->next = First_cookie;
+	First_cookie = p;
+    }
+
+    copyParsedURL(&p->url, pu);
+    p->name = name;
+    p->value = value;
+    p->expires = expires;
+    p->domain = domain;
+    p->path = path;
+    p->comment = comment;
+    p->version = version;
+    p->portl = portlist;
+    p->commentURL = commentURL;
+
+    if (flag & COO_SECURE)
+	p->flag |= COO_SECURE;
+    else
+	p->flag &= ~COO_SECURE;
+    if (odomain)
+	p->flag |= COO_DOMAIN;
+    else
+	p->flag &= ~COO_DOMAIN;
+    if (opath)
+	p->flag |= COO_PATH;
+    else
+	p->flag &= ~COO_PATH;
+    if (flag & COO_DISCARD || p->expires == (time_t) - 1) {
+	p->flag |= COO_DISCARD;
+    }
+    else {
+	p->flag &= ~COO_DISCARD;
+	is_saved = 0;
+    }
+
+    check_expired_cookies();
+    return 0;
+}
+
+struct cookie *
+nth_cookie(int n)
+{
+    struct cookie *p;
+    int i;
+    for (p = First_cookie, i = 0; p; p = p->next, i++) {
+	if (i == n)
+	    return p;
+    }
+    return NULL;
+}
+
+#define str2charp(str) ((str)? (str)->ptr : "")
+
+void
+save_cookies(void)
+{
+    struct cookie *p;
+    char *cookie_file;
+    FILE *fp;
+
+    check_expired_cookies();
+
+    if (!First_cookie || is_saved || rc_dir_is_tmp)
+	return;
+
+    cookie_file = rcFile(COOKIE_FILE);
+    if (!(fp = fopen(cookie_file, "w")))
+	return;
+
+    for (p = First_cookie; p; p = p->next) {
+	if (!(p->flag & COO_USE) || p->flag & COO_DISCARD)
+	    continue;
+	fprintf(fp, "%s\t%s\t%s\t%ld\t%s\t%s\t%d\t%d\t%s\t%s\t%s\n",
+		parsedURL2Str(&p->url)->ptr,
+		p->name->ptr, p->value->ptr, p->expires,
+		p->domain->ptr, p->path->ptr, p->flag,
+		p->version, str2charp(p->comment),
+		(p->portl) ? portlist2str(p->portl)->ptr : "",
+		str2charp(p->commentURL));
+    }
+    fclose(fp);
+    chmod(cookie_file, S_IRUSR | S_IWUSR);
+}
+
+static Str
+readcol(char **p)
+{
+    Str tmp = Strnew();
+    while (**p && **p != '\n' && **p != '\r' && **p != '\t')
+	Strcat_char(tmp, *((*p)++));
+    if (**p == '\t')
+	(*p)++;
+    return tmp;
+}
+
+void
+load_cookies(void)
+{
+    struct cookie *cookie, *p;
+    FILE *fp;
+    Str line;
+    char *str;
+
+    if (!(fp = fopen(rcFile(COOKIE_FILE), "r")))
+	return;
+
+    if (First_cookie) {
+	for (p = First_cookie; p->next; p = p->next);
+    }
+    else {
+	p = NULL;
+    }
+    for (;;) {
+	line = Strfgets(fp);
+
+	if (line->length == 0)
+	    break;
+	str = line->ptr;
+	cookie = New(struct cookie);
+	cookie->next = NULL;
+	cookie->flag = 0;
+	cookie->version = 0;
+	cookie->expires = (time_t) - 1;
+	cookie->comment = NULL;
+	cookie->portl = NULL;
+	cookie->commentURL = NULL;
+	parseURL(readcol(&str)->ptr, &cookie->url, NULL);
+	if (!*str)
+	    return;
+	cookie->name = readcol(&str);
+	if (!*str)
+	    return;
+	cookie->value = readcol(&str);
+	if (!*str)
+	    return;
+	cookie->expires = (time_t) atol(readcol(&str)->ptr);
+	if (!*str)
+	    return;
+	cookie->domain = readcol(&str);
+	if (!*str)
+	    return;
+	cookie->path = readcol(&str);
+	if (!*str)
+	    return;
+	cookie->flag = atoi(readcol(&str)->ptr);
+	if (!*str)
+	    return;
+	cookie->version = atoi(readcol(&str)->ptr);
+	if (!*str)
+	    return;
+	cookie->comment = readcol(&str);
+	if (cookie->comment->length == 0)
+	    cookie->comment = NULL;
+	if (!*str)
+	    return;
+	cookie->portl = make_portlist(readcol(&str));
+	if (!*str)
+	    return;
+	cookie->commentURL = readcol(&str);
+	if (cookie->commentURL->length == 0)
+	    cookie->commentURL = NULL;
+
+	if (p)
+	    p->next = cookie;
+	else
+	    First_cookie = cookie;
+	p = cookie;
+    }
+
+    fclose(fp);
+}
+
+void
+initCookie(void)
+{
+    load_cookies();
+    check_expired_cookies();
+}
+
+Buffer *
+cookie_list_panel(void)
+{
+    Str src = Strnew_charp("<html><head><title>Cookies</title></head>"
+			   "<body><center><b>Cookies</b></center>"
+			   "<p><form method=internal action=cookie>");
+    struct cookie *p;
+    int i;
+    char *tmp, tmp2[80];
+
+    if (!use_cookie || !First_cookie)
+	return NULL;
+
+    Strcat_charp(src, "<ol>");
+    for (p = First_cookie, i = 0; p; p = p->next, i++) {
+	tmp = htmlquote_str(parsedURL2Str(&p->url)->ptr);
+	if (p->expires != (time_t) - 1) {
+#ifdef HAVE_STRFTIME
+	    strftime(tmp2, 80, "%a, %d %b %Y %H:%M:%S GMT", gmtime(&p->expires));
+#else  /* not HAVE_STRFTIME */
+            struct tm *gmt;
+	    static char *dow[] = {
+		"Sun ", "Mon ", "Tue ", "Wed ", "Thu ", "Fri ", "Sat "
+	    };
+	    static char *month[] = {
+		"Jan ", "Feb ", "Mar ", "Apr ", "May ", "Jun ",
+		"Jul ", "Aug ", "Sep ", "Oct ", "Nov ", "Dec "
+	    };
+            gmt = gmtime( &p->expires );
+	    strcpy(tmp2,dow[gmt->tm_wday]);
+            sprintf( &tmp2[4], "%02d ", gmt->tm_mday );
+	    strcpy(&tmp2[7],month[gmt->tm_mon]);
+            if( gmt->tm_year < 1900 )
+                sprintf( &tmp2[11], "%04d %02d:%02d:%02d GMT",
+			 (gmt->tm_year) + 1900, gmt->tm_hour, gmt->tm_min,
+			 gmt->tm_sec );
+            else
+                sprintf( &tmp2[11], "%04d %02d:%02d:%02d GMT",
+                    gmt->tm_year, gmt->tm_hour, gmt->tm_min, gmt->tm_sec );
+#endif  /* not HAVE_STRFTIME */
+	}
+	else
+	    tmp2[0] = '\0';
+	Strcat_charp(src, "<li>");
+	Strcat_charp(src, "<h1><a href=\"");
+	Strcat_charp(src, tmp);
+	Strcat_charp(src, "\">");
+	Strcat_charp(src, tmp);
+	Strcat_charp(src, "</a></h1>");
+
+	Strcat_charp(src, "<table cellpadding=0>");
+	if (!(p->flag & COO_SECURE)) {
+	    Strcat_charp(src, "<tr><td width=\"80\"><b>Cookie:</b></td><td>");
+	    Strcat_charp(src, htmlquote_str(make_cookie(p)->ptr));
+	    Strcat_charp(src, "</td></tr>");
+	}
+	if (p->comment) {
+	    Strcat_charp(src, "<tr><td width=\"80\"><b>Comment:</b></td><td>");
+	    Strcat_charp(src, htmlquote_str(p->comment->ptr));
+	    Strcat_charp(src, "</td></tr>");
+	}
+	if (p->commentURL) {
+	    Strcat_charp(src, "<tr><td width=\"80\"><b>CommentURL:</b></td><td>");
+	    Strcat_charp(src, "<a href=\"");
+	    Strcat_charp(src, htmlquote_str(p->commentURL->ptr));
+	    Strcat_charp(src, "\">");
+	    Strcat_charp(src, htmlquote_str(p->commentURL->ptr));
+	    Strcat_charp(src, "</a>");
+	    Strcat_charp(src, "</td></tr>");
+	}
+	if (tmp2[0]) {
+	    Strcat_charp(src, "<tr><td width=\"80\"><b>Expires:</b></td><td>");
+	    Strcat_charp(src, tmp2);
+	    if (p->flag & COO_DISCARD)
+		Strcat_charp(src, " (Discard)");
+	    Strcat_charp(src, "</td></tr>");
+	}
+	Strcat_charp(src, "<tr><td width=\"80\"><b>Version:</b></td><td>");
+	Strcat_charp(src, Sprintf("%d", p->version)->ptr);
+	Strcat_charp(src, "</td></tr><tr><td>");
+	if (p->domain) {
+	    Strcat_charp(src, "<tr><td width=\"80\"><b>Domain:</b></td><td>");
+	    Strcat_charp(src, htmlquote_str(p->domain->ptr));
+	    Strcat_charp(src, "</td></tr>");
+	}
+	if (p->path) {
+	    Strcat_charp(src, "<tr><td width=\"80\"><b>Path:</b></td><td>");
+	    Strcat_charp(src, htmlquote_str(p->path->ptr));
+	    Strcat_charp(src, "</td></tr>");
+	}
+	if (p->portl) {
+	    Strcat_charp(src, "<tr><td width=\"80\"><b>Port:</b></td><td>");
+	    Strcat_charp(src, htmlquote_str(portlist2str(p->portl)->ptr));
+	    Strcat_charp(src, "</td></tr>");
+	}
+	Strcat_charp(src, "<tr><td width=\"80\"><b>Secure:</b></td><td>");
+	Strcat_charp(src, (p->flag & COO_SECURE) ? "Yes" : "No");
+	Strcat_charp(src, "</td></tr><tr><td>");
+
+	Strcat(src, Sprintf("<tr><td width=\"80\"><b>Use:</b></td><td>"
+			    "<input type=radio name=\"%d\" value=1%s>Yes"
+			    "&nbsp;&nbsp;"
+			    "<input type=radio name=\"%d\" value=0%s>No",
+			    i, (p->flag & COO_USE) ? " checked" : "",
+			    i, (!(p->flag & COO_USE)) ? " checked" : ""));
+	Strcat_charp(src, "</td></tr><tr><td><input type=submit value=\"OK\"></table><p>");
+    }
+    Strcat_charp(src, "</ol></form></body></html>");
+    return loadHTMLString(src);
+}
+
+void
+set_cookie_flag(struct parsed_tagarg *arg)
+{
+    int n, v;
+    struct cookie *p;
+
+    while (arg) {
+	if (arg->arg && *arg->arg && arg->value && *arg->value) {
+	    n = atoi(arg->arg);
+	    v = atoi(arg->value);
+	    if ((p = nth_cookie(n)) != NULL) {
+		if (v && !(p->flag & COO_USE))
+		    p->flag |= COO_USE;
+		else if (!v && p->flag & COO_USE)
+		    p->flag &= ~COO_USE;
+		if (!(p->flag & COO_DISCARD))
+		    is_saved = 0;
+	    }
+	}
+	arg = arg->next;
+    }
+    backBf();
+}
+
+int
+check_cookie_accept_domain(char *domain)
+{
+    TextListItem *tl;
+
+    if (domain == NULL)
+	return 0;
+
+    if (Cookie_accept_domains && Cookie_accept_domains->nitem > 0) {
+	for (tl = Cookie_accept_domains->first; tl != NULL; tl = tl->next) {
+	    if (domain_match(domain, tl->ptr))
+		return 1;
+	}
+    }
+    if (Cookie_reject_domains && Cookie_reject_domains->nitem > 0) {
+	for (tl = Cookie_reject_domains->first; tl != NULL; tl = tl->next) {
+	    if (domain_match(domain, tl->ptr))
+		return 0;
+	}
+    }
+    return 1;
+}
+#endif				/* USE_COOKIE */