prevent spurious errors when requesting specific message parts

[nmh] / uip / mhoutsbr.c

diff --git a/uip/mhoutsbr.c b/uip/mhoutsbr.c
index 8f19702c5310889f72d845c84a01b2199721a0f8..ca1acf8374763531fe82e99a07f94647495d9b97 100644 (file)
--- a/uip/mhoutsbr.c
+++ b/uip/mhoutsbr.c
@@ -317,7 +317,9 @@ write8Bit (CT ct, FILE *out)
     c = '\n';
     while ((inbytes = fread (buffer, 1, sizeof buffer, ce->ce_fp)) > 0) {
         c = buffer[inbytes - 1];
-        fwrite (buffer, 1, inbytes, out);
+        if (fwrite (buffer, 1, inbytes, out) < inbytes) {
+            advise ("write8Bit", "fwrite");
+        }
     }
     if (c != '\n')
        putc ('\n', out);
@@ -336,26 +338,35 @@ writeQuoted (CT ct, FILE *out)
 {
     int fd;
     char *cp, *file;
-    char c = '\0', buffer[BUFSIZ];
+    char c = '\0';
     CE ce = &ct->c_cefile;
     int n = 0;
+    char *bufp = NULL;
+    size_t buflen;
+    ssize_t gotlen;
 
     file = NULL;
     if ((fd = (*ct->c_ceopenfnx) (ct, &file)) == NOTOK)
        return NOTOK;
 
-    while (fgets (buffer, sizeof(buffer) - 1, ce->ce_fp)) {
+    while ((gotlen = getline(&bufp, &buflen, ce->ce_fp)) != -1) {
 
-       cp = buffer + strlen (buffer) - 1;
+       cp = bufp + gotlen - 1;
        if ((c = *cp) == '\n')
-           *cp = '\0';
-
-       if (strncmp (cp = buffer, "From ", sizeof("From ") - 1) == 0) {
-           fprintf (out, "=%02X", *cp++ & 0xff);
+           gotlen--;
+
+       /*
+        * if the line starts with "From ", encode the 'F' so it
+        * doesn't falsely match an mbox delimiter.
+        */
+       cp = bufp;
+       if (gotlen >= 5 && strncmp (cp, "From ", 5) == 0) {
+           fprintf (out, "=%02X", 'F');
+           cp++;
            n += 3;
        }
 
-       for (; *cp; cp++) {
+       for (; cp < bufp + gotlen; cp++) {
            if (n > CPERLIN - 3) {
                fputs ("=\n", out);
                n = 0;
@@ -384,7 +395,7 @@ three_print:
        }
 
        if (c == '\n') {
-           if (cp > buffer && (*--cp == ' ' || *cp == '\t'))
+           if (cp > bufp && (*--cp == ' ' || *cp == '\t'))
                fputs ("=\n", out);
 
            putc ('\n', out);