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-rw-r--r--toys/pending/uudecode.c174
-rw-r--r--toys/pending/uuencode.c116
2 files changed, 290 insertions, 0 deletions
diff --git a/toys/pending/uudecode.c b/toys/pending/uudecode.c
new file mode 100644
index 00000000..71774ea2
--- /dev/null
+++ b/toys/pending/uudecode.c
@@ -0,0 +1,174 @@
+/* uudecode.c - uudecode / base64 decode
+ *
+ * Copyright 2013 Erich Plondke <toybox@erich.wreck.org>
+ *
+ * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/uudecode.html
+
+USE_UUENCODE(NEWTOY(uudecode, ">2o:", TOYFLAG_USR|TOYFLAG_BIN))
+
+config UUDECODE
+ bool "uudecode"
+ default n
+ help
+ usage: uudecode [-o outfile] [file]
+
+ Uudecode or base64-decode stdin or [file], sending output to outfile or
+ filename specified by input.
+*/
+
+#define FOR_uudecode
+#include "toys.h"
+
+GLOBALS(
+ char *o;
+)
+
+/*
+ * Turn a character back into a value.
+ * The smallest valid character is 0x2B ('+')
+ * The biggest valid character is 0x7A ('z')
+ * We can make a table of 16*5 entries to cover 0x2B - 0x7A
+ */
+
+static inline int startswith(const char *a, const char *b)
+{
+ return (0==strncmp(a,b,strlen(b)));
+}
+
+static inline signed char uudecode_b64_1byte(char in)
+{
+ char ret;
+ static const signed char table[16*5] = {
+ /* '+' (0x2B) is 62, '/'(0x2F) is 63, rest invalid */
+ 62, -1, -1, -1, 63,
+ /* '0'-'9' are values 52-61, rest of 0x3A - 0x3F is invalid, = is special... */
+ 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
+ /* '@' is invalid, 'A'-'Z' are values 0-25, 0x5b - 0x5F are invalid */
+ -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
+ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
+ /* '`' is invalid, 'a'-'z' are values 26-51, 0x7B - 0x7F are invalid */
+ -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+ 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
+ };
+ in &= 0x7f;
+ if (in < '+') return -1;
+ if (in > 'z') return -1;
+ in -= '+';
+ ret = table[in];
+ return ret;
+};
+
+
+/* Returns length put in out */
+static int uudecode_b64_4bytes(char *out, const char *in)
+{
+ unsigned int i,x=0;
+ signed char b0,b1,b2,b3;
+ int len = 3;
+ b0 = uudecode_b64_1byte(in[0]);
+ b1 = uudecode_b64_1byte(in[1]);
+ b2 = uudecode_b64_1byte(in[2]);
+ b3 = uudecode_b64_1byte(in[3]);
+ if ((b1 < 0) || (b0 < 0)) return 0;
+ if (b3 < 0) len--;
+ if (b2 < 0) len--;
+ x = ((b0 & 0x3f)<<18) | ((b1 & 0x3f)<<12) | ((b2 & 0x3f) << 6) | (b3 & 0x3f);
+ for (i = 0; i < len; i++) {
+ *out++ = (x>>(8*(2-i))) & 0x0ff;
+ }
+ return len;
+}
+
+static void uudecode_b64_line(int ofd, const char *in, int ilen)
+{
+ int olen;
+ char out[4];
+ while (ilen >= 4) {
+ olen = uudecode_b64_4bytes(out,in);
+ xwrite(ofd,out,olen);
+ in += 4;
+ ilen -= 4;
+ };
+}
+
+static void uudecode_b64(int ifd, int ofd)
+{
+ int len;
+ char *line;
+ while ((line = get_line(ifd)) != NULL) {
+ if (startswith(line,"====")) return;
+ if ((len = strlen(line)) < 4) continue; // skip empty lines
+ uudecode_b64_line(ofd,line,len);
+ free(line);
+ }
+}
+
+
+static void uudecode_uu_4bytes(char *out, const char *in, int len)
+{
+ unsigned int i,x=0;
+ for (i = 0; i < 4; i++) {
+ x |= ((in[i] - 32) & 0x03f) << (6*(3-i));
+ }
+ if (len > 3) len = 3;
+ for (i = 0; i < len; i++) {
+ *out++ = x >> (8*(2-i));
+ }
+}
+
+static void uudecode_uu_line(int ofd, const char *in)
+{
+ int olen = in[0] - 32;
+ char buf[4];
+ in++;
+ while (olen > 0) {
+ uudecode_uu_4bytes(buf,in,olen);
+ xwrite(ofd,buf,olen < 3 ? olen : 3);
+ olen -= 3;
+ in += 4;
+ }
+}
+
+static void uudecode_uu(int ifd, int ofd)
+{
+ char *line = NULL;
+ while ((line = get_line(ifd)) != NULL) {
+ if (line[0] == '`') break;
+ if (startswith(line,"end")) break;
+ if (strlen(line) < 1) break;
+ uudecode_uu_line(ofd,line);
+ free(line);
+ }
+}
+
+void uudecode_main(void)
+{
+ char *out_filename = NULL;
+ int ifd = 0; /* STDIN */
+ int ofd = 1; /* STDOUT */
+ char *line;
+ char *p,*p2;
+ void (*decoder)(int ifd, int ofd) = NULL;
+ long mode = 0744;
+ if (toys.optc == 1) {
+ ifd = xopen(toys.optargs[0],O_RDONLY); // dies if error
+ }
+ do {
+ if ((line = get_line(ifd)) == NULL) perror_exit("empty file");
+ } while (strlen(line) == 0); /* skip over empty lines */
+ if (startswith(line,"begin ")) decoder = uudecode_uu;
+ else if (startswith(line,"begin-base64 ")) decoder = uudecode_b64;
+ else perror_exit("not a valid uu- or base64-encoded file");
+ for (p = line; !isspace(*p); p++) /* skip first part */;
+ for (; isspace(*p); p++) /* skip spaces */;
+ mode = strtoul(p,&p2,8);
+ p = p2 + 1; /* skip space */
+ if (toys.optflags & FLAG_o) {
+ out_filename = TT.o;
+ } else {
+ out_filename = p;
+ }
+ ofd = xcreate(out_filename,O_WRONLY|O_CREAT|O_TRUNC,mode);
+ free(line);
+ decoder(ifd,ofd);
+}
diff --git a/toys/pending/uuencode.c b/toys/pending/uuencode.c
new file mode 100644
index 00000000..d6cc5ad2
--- /dev/null
+++ b/toys/pending/uuencode.c
@@ -0,0 +1,116 @@
+/* uuencode.c - uuencode / base64 encode
+ *
+ * Copyright 2013 Erich Plondke <toybox@erich.wreck.org>
+ *
+ * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/uuencode.html
+
+USE_UUENCODE(NEWTOY(uuencode, "<1>2m", TOYFLAG_USR|TOYFLAG_BIN))
+
+config UUENCODE
+ bool "uuencode"
+ default n
+ help
+ usage: uuencode [-m] [file] encode-filename
+
+ Uuencode or (with -m option) base64-encode stdin or [file],
+ with encode-filename in the output, which is sent to stdout.
+*/
+
+#define FOR_uuencode
+#include "toys.h"
+
+
+
+static void uuencode_b64_3bytes(char *out, const char *in, int bytes)
+{
+ static const char *table = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "abcdefghijklmnopqrstuvwxyz"
+ "0123456789+/";
+ unsigned int i,x=0;
+ for (i = 0; i < bytes; i++) {
+ x |= (in[i] & 0x0ff) << (8*(2-i));
+ }
+ out[0] = table[(x>>(3*6)) & 0x3f];
+ out[1] = table[(x>>(2*6)) & 0x3f];
+ out[2] = table[(x>>(1*6)) & 0x3f];
+ out[3] = table[(x>>(0*6)) & 0x3f];
+ if (bytes <= 1) out[2] = '=';
+ if (bytes <= 2) out[3] = '=';
+}
+
+static void uuencode_b64_line(char *out, const char *in, int len)
+{
+ while (len > 0) {
+ uuencode_b64_3bytes(out,in,len < 3 ? len : 3);
+ xprintf("%c%c%c%c",out[0],out[1],out[2],out[3]);
+ in += 3;
+ len -= 3;
+ };
+ xprintf("\n");
+}
+
+static void uuencode_b64(int fd, const char *name)
+{
+ int len;
+ char *inbuf = toybuf;
+ char *outbuf = toybuf+64;
+ xprintf("begin-base64 744 %s\n",name);
+ do {
+ len = xread(fd,inbuf,48);
+ uuencode_b64_line(outbuf,inbuf,len);
+ } while (len > 0);
+ xprintf("====\n");
+}
+
+
+static void uuencode_uu_3bytes(char *out, const char *in)
+{
+ unsigned int i,x=0;
+ for (i = 0; i <= 2; i++) {
+ x |= (in[i] & 0x0ff) << (8*(2-i));
+ }
+ for (i = 0; i <= 3; i++) {
+ out[i] = 32 + ((x >> (6*(3-i))) & 0x3f);
+ }
+}
+
+static void uuencode_uu_line(char *out, const char *in, int len)
+{
+ int i;
+ if (len == 0) {
+ xprintf("`\n");
+ return;
+ }
+ xprintf("%c",len+32);
+ for (i = 0; i < len; i += 3) {
+ uuencode_uu_3bytes(out,in+i);
+ xprintf("%c%c%c%c",out[0],out[1],out[2],out[3]);
+ }
+ xprintf("\n");
+}
+
+static void uuencode_uu(int fd, const char *name)
+{
+ int len;
+ char *inbuf = toybuf;
+ char *outbuf = toybuf+64;
+ xprintf("begin 744 %s\n",name);
+ do {
+ len = xread(fd,inbuf,45);
+ uuencode_uu_line(outbuf,inbuf,len);
+ } while (len > 0);
+ xprintf("end\n");
+}
+
+void uuencode_main(void)
+{
+ char *encode_filename = toys.optargs[0];
+ int fd = 0; /* STDIN */
+
+ if (toys.optc == 2) {
+ fd = xopen(toys.optargs[0],O_RDONLY); // dies if error
+ encode_filename = toys.optargs[1];
+ }
+ if (toys.optflags & FLAG_m) uuencode_b64(fd,encode_filename);
+ else uuencode_uu(fd,encode_filename);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 17:51:26 +0000