]> git.cameronkatri.com Git - mandoc.git/blobdiff - term_ps.c
fix unchecked snprintf(3) in page header printing:
[mandoc.git] / term_ps.c
index b464b842eae5f77f4fb874ad5dcaf01d9d8838b0..f4fd75016c526d1f87222c67d279a5654451228b 100644 (file)
--- a/term_ps.c
+++ b/term_ps.c
@@ -1,6 +1,7 @@
-/*     $Id: term_ps.c,v 1.55 2014/01/05 19:10:56 joerg Exp $ */
+/*     $Id: term_ps.c,v 1.59 2014/04/20 16:46:05 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -30,6 +31,7 @@
 #include <unistd.h>
 
 #include "mandoc.h"
+#include "mandoc_aux.h"
 #include "out.h"
 #include "main.h"
 #include "term.h"
 #define        PS_BUFSLOP        128
 
 /* Convert PostScript point "x" to an AFM unit. */
-#define        PNT2AFM(p, x) /* LINTED */ \
+#define        PNT2AFM(p, x) \
        (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale))
 
 /* Convert an AFM unit "x" to a PostScript points */
-#define        AFM2PNT(p, x) /* LINTED */ \
+#define        AFM2PNT(p, x) \
        ((double)(x) / (1000.0 / (double)(p)->ps->scale))
 
 struct glyph {
@@ -74,10 +76,11 @@ struct      termp_ps {
        size_t            bottom;       /* body bottom (AFM units) */
        size_t            height;       /* page height (AFM units */
        size_t            width;        /* page width (AFM units) */
+       size_t            lastwidth;    /* page width before last ll */
        size_t            left;         /* body left (AFM units) */
        size_t            header;       /* header pos (AFM units) */
        size_t            footer;       /* footer pos (AFM units) */
-       size_t            pdfbytes;     /* current output byte */
+       size_t            pdfbytes;     /* current output byte */
        size_t            pdflastpg;    /* byte of last page mark */
        size_t            pdfbody;      /* start of body object */
        size_t           *pdfobjs;      /* table of object offsets */
@@ -103,6 +106,7 @@ __attribute__((__format__ (__printf__, 2, 3)))
 static void              ps_printf(struct termp *, const char *, ...);
 static void              ps_putchar(struct termp *, char);
 static void              ps_setfont(struct termp *, enum termfont);
+static void              ps_setwidth(struct termp *, int, size_t);
 static struct termp     *pspdf_alloc(char *);
 static void              pdf_obj(struct termp *, size_t);
 
@@ -448,8 +452,9 @@ pspdf_alloc(char *outopts)
        p->endline = ps_endline;
        p->hspan = ps_hspan;
        p->letter = ps_letter;
+       p->setwidth = ps_setwidth;
        p->width = ps_width;
-       
+
        toks[0] = "paper";
        toks[1] = NULL;
 
@@ -457,7 +462,7 @@ pspdf_alloc(char *outopts)
 
        while (outopts && *outopts)
                switch (getsubopt(&outopts, UNCONST(toks), &v)) {
-               case (0):
+               case 0:
                        pp = v;
                        break;
                default:
@@ -493,7 +498,7 @@ pspdf_alloc(char *outopts)
                        fprintf(stderr, "%s: Unknown paper\n", pp);
        }
 
-       /* 
+       /*
         * This MUST be defined before any PNT2AFM or AFM2PNT
         * calculations occur.
         */
@@ -507,16 +512,14 @@ pspdf_alloc(char *outopts)
 
        /* Margins are 1/9 the page x and y. */
 
-       marginx = /* LINTED */
-               (size_t)((double)pagex / 9.0);
-       marginy = /* LINTED */
-               (size_t)((double)pagey / 9.0);
+       marginx = (size_t)((double)pagex / 9.0);
+       marginy = (size_t)((double)pagey / 9.0);
 
        /* Line-height is 1.4em. */
 
        lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
 
-       p->ps->width = (size_t)pagex;
+       p->ps->width = p->ps->lastwidth = (size_t)pagex;
        p->ps->height = (size_t)pagey;
        p->ps->header = pagey - (marginy / 2) - (lineheight / 2);
        p->ps->top = pagey - marginy;
@@ -529,6 +532,20 @@ pspdf_alloc(char *outopts)
        return(p);
 }
 
+static void
+ps_setwidth(struct termp *p, int iop, size_t width)
+{
+       size_t   lastwidth;
+
+       lastwidth = p->ps->width;
+       if (0 < iop)
+               p->ps->width += width;
+       else if (0 > iop)
+               p->ps->width -= width;
+       else
+               p->ps->width = width ? width : p->ps->lastwidth;
+       p->ps->lastwidth = lastwidth;
+}
 
 void
 pspdf_free(void *arg)
@@ -546,7 +563,6 @@ pspdf_free(void *arg)
        term_free(p);
 }
 
-
 static void
 ps_printf(struct termp *p, const char *fmt, ...)
 {
@@ -564,12 +580,11 @@ ps_printf(struct termp *p, const char *fmt, ...)
        if ( ! (PS_MARGINS & p->ps->flags)) {
                len = vprintf(fmt, ap);
                va_end(ap);
-               p->ps->pdfbytes += /* LINTED */
-                       len < 0 ? 0 : (size_t)len;
+               p->ps->pdfbytes += len < 0 ? 0 : (size_t)len;
                return;
        }
 
-       /* 
+       /*
         * XXX: I assume that the in-margin print won't exceed
         * PS_BUFSLOP (128 bytes), which is reasonable but still an
         * assumption that will cause pukeage if it's not the case.
@@ -585,7 +600,6 @@ ps_printf(struct termp *p, const char *fmt, ...)
        p->ps->psmargcur = strlen(p->ps->psmarg);
 }
 
-
 static void
 ps_putchar(struct termp *p, char c)
 {
@@ -594,7 +608,6 @@ ps_putchar(struct termp *p, char c)
        /* See ps_printf(). */
 
        if ( ! (PS_MARGINS & p->ps->flags)) {
-               /* LINTED */
                putchar(c);
                p->ps->pdfbytes++;
                return;
@@ -607,7 +620,6 @@ ps_putchar(struct termp *p, char c)
        p->ps->psmarg[pos] = '\0';
 }
 
-
 static void
 pdf_obj(struct termp *p, size_t obj)
 {
@@ -616,9 +628,8 @@ pdf_obj(struct termp *p, size_t obj)
 
        if ((obj - 1) >= p->ps->pdfobjsz) {
                p->ps->pdfobjsz = obj + 128;
-               p->ps->pdfobjs = realloc
-                       (p->ps->pdfobjs, 
-                        p->ps->pdfobjsz * sizeof(size_t));
+               p->ps->pdfobjs = realloc(p->ps->pdfobjs,
+                   p->ps->pdfobjsz * sizeof(size_t));
                if (NULL == p->ps->pdfobjs) {
                        perror(NULL);
                        exit((int)MANDOCLEVEL_SYSERR);
@@ -629,7 +640,6 @@ pdf_obj(struct termp *p, size_t obj)
        ps_printf(p, "%zu 0 obj\n", obj);
 }
 
-
 static void
 ps_closepage(struct termp *p)
 {
@@ -662,7 +672,7 @@ ps_closepage(struct termp *p)
                pdf_obj(p, base + 2);
                ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n");
                ps_printf(p, "/Font <<\n");
-               for (i = 0; i < (int)TERMFONT__MAX; i++) 
+               for (i = 0; i < (int)TERMFONT__MAX; i++)
                        ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
                ps_printf(p, ">>\n>>\n");
 
@@ -683,8 +693,6 @@ ps_closepage(struct termp *p)
        p->ps->flags |= PS_NEWPAGE;
 }
 
-
-/* ARGSUSED */
 static void
 ps_end(struct termp *p)
 {
@@ -707,7 +715,7 @@ ps_end(struct termp *p)
                ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages);
                ps_printf(p, "%%%%EOF\n");
                return;
-       } 
+       }
 
        pdf_obj(p, 2);
        ps_printf(p, "<<\n/Type /Pages\n");
@@ -719,11 +727,9 @@ ps_end(struct termp *p)
        ps_printf(p, "/Kids [");
 
        for (i = 0; i < p->ps->pages; i++)
-               ps_printf(p, " %zu 0 R", i * 4 +
-                               p->ps->pdfbody + 3);
+               ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3);
 
-       base = (p->ps->pages - 1) * 4 + 
-               p->ps->pdfbody + 4;
+       base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4;
 
        ps_printf(p, "]\n>>\nendobj\n");
        pdf_obj(p, base);
@@ -737,8 +743,8 @@ ps_end(struct termp *p)
        ps_printf(p, "0000000000 65535 f \n");
 
        for (i = 0; i < base; i++)
-               ps_printf(p, "%.10zu 00000 n \n", 
-                               p->ps->pdfobjs[(int)i]);
+               ps_printf(p, "%.10zu 00000 n \n",
+                   p->ps->pdfobjs[(int)i]);
 
        ps_printf(p, "trailer\n");
        ps_printf(p, "<<\n");
@@ -751,14 +757,13 @@ ps_end(struct termp *p)
        ps_printf(p, "%%%%EOF\n");
 }
 
-
 static void
 ps_begin(struct termp *p)
 {
        time_t           t;
        int              i;
 
-       /* 
+       /*
         * Print margins into margin buffer.  Nothing gets output to the
         * screen yet, so we don't need to initialise the primary state.
         */
@@ -791,7 +796,7 @@ ps_begin(struct termp *p)
        assert(p->ps->psmarg);
        assert('\0' != p->ps->psmarg[0]);
 
-       /* 
+       /*
         * Print header and initialise page state.  Following this,
         * stuff gets printed to the screen, so make sure we're sane.
         */
@@ -806,9 +811,9 @@ ps_begin(struct termp *p)
                ps_printf(p, "%%%%Pages: (atend)\n");
                ps_printf(p, "%%%%PageOrder: Ascend\n");
                ps_printf(p, "%%%%DocumentMedia: "
-                               "Default %zu %zu 0 () ()\n",
-                               (size_t)AFM2PNT(p, p->ps->width),
-                               (size_t)AFM2PNT(p, p->ps->height));
+                   "Default %zu %zu 0 () ()\n",
+                   (size_t)AFM2PNT(p, p->ps->width),
+                   (size_t)AFM2PNT(p, p->ps->height));
                ps_printf(p, "%%%%DocumentNeededResources: font");
 
                for (i = 0; i < (int)TERMFONT__MAX; i++)
@@ -840,7 +845,6 @@ ps_begin(struct termp *p)
        ps_setfont(p, TERMFONT_NONE);
 }
 
-
 static void
 ps_pletter(struct termp *p, int c)
 {
@@ -853,25 +857,23 @@ ps_pletter(struct termp *p, int c)
 
        if (PS_NEWPAGE & p->ps->flags) {
                if (TERMTYPE_PS == p->type) {
-                       ps_printf(p, "%%%%Page: %zu %zu\n", 
-                                       p->ps->pages + 1, 
-                                       p->ps->pages + 1);
-                       ps_printf(p, "/%s %zu selectfont\n", 
-                                       fonts[(int)p->ps->lastf].name, 
-                                       p->ps->scale);
+                       ps_printf(p, "%%%%Page: %zu %zu\n",
+                           p->ps->pages + 1, p->ps->pages + 1);
+                       ps_printf(p, "/%s %zu selectfont\n",
+                           fonts[(int)p->ps->lastf].name,
+                           p->ps->scale);
                } else {
-                       pdf_obj(p, p->ps->pdfbody + 
-                                       p->ps->pages * 4);
+                       pdf_obj(p, p->ps->pdfbody +
+                           p->ps->pages * 4);
                        ps_printf(p, "<<\n");
-                       ps_printf(p, "/Length %zu 0 R\n", 
-                                       p->ps->pdfbody + 1 +
-                                       p->ps->pages * 4);
+                       ps_printf(p, "/Length %zu 0 R\n",
+                           p->ps->pdfbody + 1 + p->ps->pages * 4);
                        ps_printf(p, ">>\nstream\n");
                }
                p->ps->pdflastpg = p->ps->pdfbytes;
                p->ps->flags &= ~PS_NEWPAGE;
        }
-       
+
        /*
         * If we're not in a PostScript "word" context, then open one
         * now at the current cursor.
@@ -879,16 +881,15 @@ ps_pletter(struct termp *p, int c)
 
        if ( ! (PS_INLINE & p->ps->flags)) {
                if (TERMTYPE_PS != p->type) {
-                       ps_printf(p, "BT\n/F%d %zu Tf\n", 
-                                       (int)p->ps->lastf,
-                                       p->ps->scale);
+                       ps_printf(p, "BT\n/F%d %zu Tf\n",
+                           (int)p->ps->lastf, p->ps->scale);
                        ps_printf(p, "%.3f %.3f Td\n(",
-                                       AFM2PNT(p, p->ps->pscol),
-                                       AFM2PNT(p, p->ps->psrow));
+                           AFM2PNT(p, p->ps->pscol),
+                           AFM2PNT(p, p->ps->psrow));
                } else
-                       ps_printf(p, "%.3f %.3f moveto\n(", 
-                                       AFM2PNT(p, p->ps->pscol),
-                                       AFM2PNT(p, p->ps->psrow));
+                       ps_printf(p, "%.3f %.3f moveto\n(",
+                           AFM2PNT(p, p->ps->pscol),
+                           AFM2PNT(p, p->ps->psrow));
                p->ps->flags |= PS_INLINE;
        }
 
@@ -902,11 +903,11 @@ ps_pletter(struct termp *p, int c)
         */
 
        switch (c) {
-       case ('('):
+       case '(':
                /* FALLTHROUGH */
-       case (')'):
+       case ')':
                /* FALLTHROUGH */
-       case ('\\'):
+       case '\\':
                ps_putchar(p, '\\');
                break;
        default:
@@ -921,19 +922,18 @@ ps_pletter(struct termp *p, int c)
                ps_putchar(p, ' ');
                p->ps->pscol += (size_t)fonts[f].gly[0].wx;
                return;
-       } 
+       }
 
        ps_putchar(p, (char)c);
        c -= 32;
        p->ps->pscol += (size_t)fonts[f].gly[c].wx;
 }
 
-
 static void
 ps_pclose(struct termp *p)
 {
 
-       /* 
+       /*
         * Spit out that we're exiting a word context (this is a
         * "partial close" because we don't check the last-char buffer
         * or anything).
@@ -941,7 +941,7 @@ ps_pclose(struct termp *p)
 
        if ( ! (PS_INLINE & p->ps->flags))
                return;
-       
+
        if (TERMTYPE_PS != p->type) {
                ps_printf(p, ") Tj\nET\n");
        } else
@@ -950,7 +950,6 @@ ps_pclose(struct termp *p)
        p->ps->flags &= ~PS_INLINE;
 }
 
-
 static void
 ps_fclose(struct termp *p)
 {
@@ -978,13 +977,11 @@ ps_fclose(struct termp *p)
        ps_pclose(p);
 }
 
-
 static void
 ps_letter(struct termp *p, int arg)
 {
        char            cc, c;
 
-       /* LINTED */
        c = arg >= 128 || arg <= 0 ? '?' : arg;
 
        /*
@@ -1029,7 +1026,6 @@ ps_letter(struct termp *p, int arg)
        ps_pletter(p, c);
 }
 
-
 static void
 ps_advance(struct termp *p, size_t len)
 {
@@ -1045,7 +1041,6 @@ ps_advance(struct termp *p, size_t len)
        p->ps->pscol += len;
 }
 
-
 static void
 ps_endline(struct termp *p)
 {
@@ -1057,7 +1052,7 @@ ps_endline(struct termp *p)
        /*
         * If we're in the margin, don't try to recalculate our current
         * row.  XXX: if the column tries to be fancy with multiple
-        * lines, we'll do nasty stuff. 
+        * lines, we'll do nasty stuff.
         */
 
        if (PS_MARGINS & p->ps->flags)
@@ -1077,8 +1072,7 @@ ps_endline(struct termp *p)
         * showpage and restart our row.
         */
 
-       if (p->ps->psrow >= p->ps->lineheight + 
-                       p->ps->bottom) {
+       if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) {
                p->ps->psrow -= p->ps->lineheight;
                return;
        }
@@ -1086,14 +1080,13 @@ ps_endline(struct termp *p)
        ps_closepage(p);
 }
 
-
 static void
 ps_setfont(struct termp *p, enum termfont f)
 {
 
        assert(f < TERMFONT__MAX);
        p->ps->lastf = f;
-       
+
        /*
         * If we're still at the top of the page, let the font-setting
         * be delayed until we actually have stuff to print.
@@ -1103,17 +1096,13 @@ ps_setfont(struct termp *p, enum termfont f)
                return;
 
        if (TERMTYPE_PS == p->type)
-               ps_printf(p, "/%s %zu selectfont\n", 
-                               fonts[(int)f].name, 
-                               p->ps->scale);
+               ps_printf(p, "/%s %zu selectfont\n",
+                   fonts[(int)f].name, p->ps->scale);
        else
-               ps_printf(p, "/F%d %zu Tf\n", 
-                               (int)f, 
-                               p->ps->scale);
+               ps_printf(p, "/F%d %zu Tf\n",
+                   (int)f, p->ps->scale);
 }
 
-
-/* ARGSUSED */
 static size_t
 ps_width(const struct termp *p, int c)
 {
@@ -1125,42 +1114,41 @@ ps_width(const struct termp *p, int c)
        return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx);
 }
 
-
 static double
 ps_hspan(const struct termp *p, const struct roffsu *su)
 {
        double           r;
-       
+
        /*
         * All of these measurements are derived by converting from the
         * native measurement to AFM units.
         */
 
        switch (su->unit) {
-       case (SCALE_CM):
+       case SCALE_CM:
                r = PNT2AFM(p, su->scale * 28.34);
                break;
-       case (SCALE_IN):
+       case SCALE_IN:
                r = PNT2AFM(p, su->scale * 72);
                break;
-       case (SCALE_PC):
+       case SCALE_PC:
                r = PNT2AFM(p, su->scale * 12);
                break;
-       case (SCALE_PT):
+       case SCALE_PT:
                r = PNT2AFM(p, su->scale * 100);
                break;
-       case (SCALE_EM):
+       case SCALE_EM:
                r = su->scale *
-                       fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
+                   fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
                break;
-       case (SCALE_MM):
+       case SCALE_MM:
                r = PNT2AFM(p, su->scale * 2.834);
                break;
-       case (SCALE_EN):
+       case SCALE_EN:
                r = su->scale *
-                       fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
+                   fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
                break;
-       case (SCALE_VS):
+       case SCALE_VS:
                r = su->scale * p->ps->lineheight;
                break;
        default:
@@ -1185,4 +1173,3 @@ ps_growbuf(struct termp *p, size_t sz)
        p->ps->psmarg = mandoc_realloc
                (p->ps->psmarg, p->ps->psmargsz);
 }
-