add generate_mail func

Signed-off-by: AGentooCat <agentoocat@mail.i2p>

src/mail.c

@@ -749,6 +749,44 @@ wipemailfail:
     return 1;
 }
 
+int generate_mail(char *user, char *subject, char *data) {
+    struct Header hdrs[] = {
+	{ .key = "subject", .val = subject },
+	{ .key = "from", .val = NULL },
+	{ .key = "to", .val = NULL },
+	{ .key = "date", .val = NULL },
+    };
+    struct Mail mail = {
+	.from = NULL,
+	.hdrl = 4,
+	.hdrs = hdrs,
+    };
+    char *to = NULL;
+    if (asprintf(&mail.from, "itoomail notification <noreply@%s>", mehost->knownas) < 1) {
+genmailfail:
+	logno(ERROR, "failed to generate mail entry for %s", user);
+	xfree(to);
+	xfree(mail.from);
+	return -1;
+    }
+    if (asprintf(&to, "%s@%s", user, mehost->knownas) < 1)
+	goto genmailfail;
+
+    char tbuf[512];
+    time_t ct1 = time(NULL);
+    struct tm *ct2 = gmtime(&ct1);
+    strftime(tbuf, 512, "%a, %d %b %Y %H:%M:%S %z", ct2);
+
+    mail.hdrs[1].val = mail.from;
+    mail.hdrs[2].val = to;
+    mail.hdrs[3].val = tbuf;
+    if (commit_incoming_mail(&mail, data, &to, 1) < 0)
+	goto genmailfail;
+    xfree(to);
+    xfree(mail.from);
+    return 1;
+}
+
 int sendmsgid(char *msgid) {
     log(INFO, "will send mail %s...", msgid);