gnu: t1lib: Fix CVE-2010-2642, CVE-2011-{0764, 1552, 1553, 1554}.

* gnu/packages/fontutils.scm (t1lib)[source]: Add patches.
* gnu/packages/patches/t1lib-CVE-2010-2642.patch,
gnu/packages/patches/t1lib-CVE-2011-0764.patch,
gnu/packages/patches/t1lib-CVE-2011-1552+CVE-2011-1553+CVE-2011-1554.patch: New variables.
* gnu/local.mk (dist_patch_DATA): Add them.

3 files changed, 189 insertions, 0 deletions

diff --git a/gnu/packages/patches/t1lib-CVE-2010-2642.patch b/gnu/packages/patches/t1lib-CVE-2010-2642.patch
new file mode 100644
index 0000000000..cd54889585
--- /dev/null
+++ b/gnu/packages/patches/t1lib-CVE-2010-2642.patch
@@ -0,0 +1,24 @@
+diff --git a/lib/t1lib/parseAFM.c b/lib/t1lib/parseAFM.c
+index 6a31d7f..ba64541 100644
+--- a/lib/t1lib/parseAFM.c
++++ b/lib/t1lib/parseAFM.c
+@@ -199,7 +199,9 @@ static char *token(stream)
+     idx = 0;
+     
+     while (ch != EOF && ch != ' ' && ch != CR  && ch != LF &&
+-	   ch != CTRL_Z && ch != '\t' && ch != ':' && ch != ';'){
++	   ch != CTRL_Z && ch != '\t' && ch != ':' && ch != ';'
++     && idx < (MAX_NAME -1))
++    {
+       ident[idx++] = ch;
+       ch = fgetc(stream);
+     } /* while */
+@@ -235,7 +237,7 @@ static char *linetoken(stream)
+     while ((ch = fgetc(stream)) == ' ' || ch == '\t' ); 
+     
+     idx = 0;
+-    while (ch != EOF && ch != CR  && ch != LF && ch != CTRL_Z) 
++    while (ch != EOF && ch != CR  && ch != LF && ch != CTRL_Z && idx < (MAX_NAME - 1)) 
+     {
+         ident[idx++] = ch;
+         ch = fgetc(stream);
diff --git a/gnu/packages/patches/t1lib-CVE-2011-0764.patch b/gnu/packages/patches/t1lib-CVE-2011-0764.patch
new file mode 100644
index 0000000000..c2d9e173b7
--- /dev/null
+++ b/gnu/packages/patches/t1lib-CVE-2011-0764.patch
@@ -0,0 +1,32 @@
+Description: Don't lookup previous point if there isn't any
+Author: Marc Deslauriers <marc.deslauriers@canonical.com>
+Forwarded: no
+
+Index: t1lib-5.1.2/lib/type1/type1.c
+===================================================================
+--- t1lib-5.1.2.orig/lib/type1/type1.c	2011-12-13 14:24:14.280965637 -0600
++++ t1lib-5.1.2/lib/type1/type1.c	2011-12-13 14:25:25.893320747 -0600
+@@ -1700,6 +1700,7 @@
+   long pindex = 0;
+   
+   /* compute hinting for previous segment! */
++  if (ppoints == NULL) Error0i("RLineTo: No previous point!\n");
+   FindStems( currx, curry, currx-ppoints[numppoints-2].x, curry-ppoints[numppoints-2].y, dx, dy);
+ 
+   /* Allocate a new path point and pre-setup data */
+@@ -1728,6 +1729,7 @@
+   long pindex = 0;
+   
+   /* compute hinting for previous point! */
++  if (ppoints == NULL) Error0i("RRCurveTo: No previous point!\n");
+   FindStems( currx, curry, currx-ppoints[numppoints-2].x, curry-ppoints[numppoints-2].y, dx1, dy1);
+ 
+   /* Allocate three new path points and pre-setup data */
+@@ -1903,6 +1905,7 @@
+     FindStems( currx, curry, 0, 0, dx, dy);
+   }
+   else {
++    if (ppoints == NULL) Error0i("RMoveTo: No previous point!\n");
+     FindStems( currx, curry, ppoints[numppoints-2].x, ppoints[numppoints-2].y, dx, dy);
+   }
+   
diff --git a/gnu/packages/patches/t1lib-CVE-2011-1552+CVE-2011-1553+CVE-2011-1554.patch b/gnu/packages/patches/t1lib-CVE-2011-1552+CVE-2011-1553+CVE-2011-1554.patch
new file mode 100644
index 0000000000..aaa31f7b93
--- /dev/null
+++ b/gnu/packages/patches/t1lib-CVE-2011-1552+CVE-2011-1553+CVE-2011-1554.patch
@@ -0,0 +1,133 @@
+Author: Jaroslav Škarvada <jskarvad@redhat.com>
+Description: Fix more crashes on oversized fonts
+Bug-Redhat: http://bugzilla.redhat.com/show_bug.cgi?id=692909
+Index: t1lib-5.1.2/lib/type1/lines.c
+===================================================================
+--- t1lib-5.1.2.orig/lib/type1/lines.c	2007-12-23 09:49:42.000000000 -0600
++++ t1lib-5.1.2/lib/type1/lines.c	2012-01-17 14:15:08.000000000 -0600
+@@ -67,6 +67,10 @@
+ None.
+ */
+  
++#define  BITS         (sizeof(LONG)*8)
++#define  HIGHTEST(p)  (((p)>>(BITS-2)) != 0)  /* includes sign bit */
++#define  TOOBIG(xy)   ((xy < 0) ? HIGHTEST(-xy) : HIGHTEST(xy))
++
+ /*
+ :h2.StepLine() - Produces Run Ends for a Line After Checks
+  
+@@ -84,6 +88,9 @@
+        IfTrace4((LineDebug > 0), ".....StepLine: (%d,%d) to (%d,%d)\n",
+                                             x1, y1, x2, y2);
+  
++      if ( TOOBIG(x1) || TOOBIG(x2) || TOOBIG(y1) || TOOBIG(y2))
++              abort("Lines this big not supported", 49);
++
+        dy = y2 - y1;
+  
+ /*
+Index: t1lib-5.1.2/lib/type1/objects.c
+===================================================================
+--- t1lib-5.1.2.orig/lib/type1/objects.c	2007-12-23 09:49:42.000000000 -0600
++++ t1lib-5.1.2/lib/type1/objects.c	2012-01-17 14:15:08.000000000 -0600
+@@ -1137,12 +1137,13 @@
+     "Context:  out of them", /* 46 */
+     "MatrixInvert:  can't", /* 47 */
+     "xiStub called", /* 48 */
+-    "Illegal access type1 abort() message" /* 49 */
++    "Lines this big not supported", /* 49 */
++    "Illegal access type1 abort() message" /* 50 */
+   };
+ 
+-  /* no is valid from 1 to 48 */
+-  if ( (number<1)||(number>48))
+-    number=49;
++  /* no is valid from 1 to 49 */
++  if ( (number<1)||(number>49))
++    number=50;
+   return( err_msgs[number-1]);
+     
+ }
+Index: t1lib-5.1.2/lib/type1/type1.c
+===================================================================
+--- t1lib-5.1.2.orig/lib/type1/type1.c	2012-01-17 14:13:28.000000000 -0600
++++ t1lib-5.1.2/lib/type1/type1.c	2012-01-17 14:19:54.000000000 -0600
+@@ -1012,6 +1012,7 @@
+   double nextdtana = 0.0;   /* tangent of post-delta against horizontal line */ 
+   double nextdtanb = 0.0;   /* tangent of post-delta against vertical line */ 
+   
++  if (ppoints == NULL || numppoints < 1) Error0v("FindStems: No previous point!\n");
+  
+   /* setup default hinted position */
+   ppoints[numppoints-1].ax     = ppoints[numppoints-1].x;
+@@ -1289,7 +1290,7 @@
+ static int DoRead(CodeP)
+   int *CodeP;
+ {
+-  if (strindex >= CharStringP->len) return(FALSE); /* end of string */
++  if (!CharStringP || strindex >= CharStringP->len) return(FALSE); /* end of string */
+   /* We handle the non-documented Adobe convention to use lenIV=-1 to
+      suppress charstring encryption. */
+   if (blues->lenIV==-1) {
+@@ -1700,7 +1701,7 @@
+   long pindex = 0;
+   
+   /* compute hinting for previous segment! */
+-  if (ppoints == NULL) Error0i("RLineTo: No previous point!\n");
++  if (ppoints == NULL || numppoints < 2) Error0i("RLineTo: No previous point!\n");
+   FindStems( currx, curry, currx-ppoints[numppoints-2].x, curry-ppoints[numppoints-2].y, dx, dy);
+ 
+   /* Allocate a new path point and pre-setup data */
+@@ -1729,7 +1730,7 @@
+   long pindex = 0;
+   
+   /* compute hinting for previous point! */
+-  if (ppoints == NULL) Error0i("RRCurveTo: No previous point!\n");
++  if (ppoints == NULL || numppoints < 2) Error0i("RRCurveTo: No previous point!\n");
+   FindStems( currx, curry, currx-ppoints[numppoints-2].x, curry-ppoints[numppoints-2].y, dx1, dy1);
+ 
+   /* Allocate three new path points and pre-setup data */
+@@ -1788,7 +1789,9 @@
+   long tmpind;
+   double deltax = 0.0;
+   double deltay = 0.0;
+-  
++ 
++  if (ppoints == NULL || numppoints < 1) Error0i("DoClosePath: No previous point!");
++ 
+   /* If this ClosePath command together with the starting point of this
+      path completes to a segment aligned to a stem, we would miss
+      hinting for this point. --> Check and explicitly care for this! */
+@@ -1803,6 +1806,7 @@
+     deltax = ppoints[i].x - ppoints[numppoints-1].x;
+     deltay = ppoints[i].y - ppoints[numppoints-1].y;
+ 
++    if (ppoints == NULL || numppoints <= i + 1) Error0i("DoClosePath: No previous point!");
+     /* save nummppoints and reset to move point */
+     tmpind = numppoints;
+     numppoints = i + 1;
+@@ -1905,7 +1909,7 @@
+     FindStems( currx, curry, 0, 0, dx, dy);
+   }
+   else {
+-    if (ppoints == NULL) Error0i("RMoveTo: No previous point!\n");
++    if (ppoints == NULL || numppoints < 2) Error0i("RMoveTo: No previous point!\n");
+     FindStems( currx, curry, ppoints[numppoints-2].x, ppoints[numppoints-2].y, dx, dy);
+   }
+   
+@@ -2155,6 +2159,7 @@
+   DOUBLE cx, cy;
+   DOUBLE ex, ey;
+ 
++  if (ppoints == NULL || numppoints < 8) Error0v("FlxProc: No previous point!");
+ 
+   /* Our PPOINT list now contains 7 moveto commands which
+      are about to be consumed by the Flex mechanism. --> Remove these
+@@ -2324,6 +2329,7 @@
+ /*   Returns currentpoint on stack          */
+ static void FlxProc2()
+ {
++  if (ppoints == NULL || numppoints < 1) Error0v("FlxProc2: No previous point!");
+   /* Push CurrentPoint on fake PostScript stack */
+   PSFakePush( ppoints[numppoints-1].x);
+   PSFakePush( ppoints[numppoints-1].y);