From b7b664a4fe9a955338f2e11a0f7433b29c8cbad0 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Sat, 27 Apr 2019 20:33:06 +0200 Subject: [PATCH 1/4] ui/curses: do not assume wchar_t contains unicode E.g. BSD and Solaris even use locale-specific encoding there. We thus have to go through the native multibyte representation and use mbrtowc/wcrtomb to make a proper conversion. Signed-off-by: Samuel Thibault Tested-by: Kamil Rytarowski Message-Id: <20190427183307.12796-2-samuel.thibault@ens-lyon.org> Signed-off-by: Gerd Hoffmann --- ui/curses.c | 151 +++++++++++++++++++++++++++++++++------------------- 1 file changed, 97 insertions(+), 54 deletions(-) diff --git a/ui/curses.c b/ui/curses.c index fb63945188..81d419879e 100644 --- a/ui/curses.c +++ b/ui/curses.c @@ -400,65 +400,108 @@ static void curses_atexit(void) endwin(); } +/* + * In the following: + * - fch is the font glyph number + * - uch is the unicode value + * - wch is the wchar_t value (may not be unicode, e.g. on BSD/solaris) + * - mbch is the native local-dependent multibyte representation + */ + /* Setup wchar glyph for one UCS-2 char */ -static void convert_ucs(int glyph, uint16_t ch, iconv_t conv) +static void convert_ucs(unsigned char fch, uint16_t uch, iconv_t conv) { + char mbch[MB_LEN_MAX]; wchar_t wch; - char *pch, *pwch; - size_t sch, swch; + char *puch, *pmbch; + size_t such, smbch; + mbstate_t ps; - pch = (char *) &ch; - pwch = (char *) &wch; - sch = sizeof(ch); - swch = sizeof(wch); + puch = (char *) &uch; + pmbch = (char *) mbch; + such = sizeof(uch); + smbch = sizeof(mbch); - if (iconv(conv, &pch, &sch, &pwch, &swch) == (size_t) -1) { - fprintf(stderr, "Could not convert 0x%04x from UCS-2 to WCHAR_T: %s\n", - ch, strerror(errno)); - } else { - vga_to_curses[glyph].chars[0] = wch; + if (iconv(conv, &puch, &such, &pmbch, &smbch) == (size_t) -1) { + fprintf(stderr, "Could not convert 0x%04x " + "from UCS-2 to a multibyte character: %s\n", + uch, strerror(errno)); + return; } + + memset(&ps, 0, sizeof(ps)); + if (mbrtowc(&wch, mbch, sizeof(mbch) - smbch, &ps) == -1) { + fprintf(stderr, "Could not convert 0x%04x " + "from a multibyte character to wchar_t: %s\n", + uch, strerror(errno)); + return; + } + vga_to_curses[fch].chars[0] = wch; } /* Setup wchar glyph for one font character */ -static void convert_font(unsigned char ch, iconv_t conv) +static void convert_font(unsigned char fch, iconv_t conv) { + char mbch[MB_LEN_MAX]; wchar_t wch; - char *pch, *pwch; - size_t sch, swch; + char *pfch, *pmbch; + size_t sfch, smbch; + mbstate_t ps; - pch = (char *) &ch; - pwch = (char *) &wch; - sch = sizeof(ch); - swch = sizeof(wch); + pfch = (char *) &fch; + pmbch = (char *) &mbch; + sfch = sizeof(fch); + smbch = sizeof(mbch); - if (iconv(conv, &pch, &sch, &pwch, &swch) == (size_t) -1) { - fprintf(stderr, "Could not convert 0x%02x from %s to WCHAR_T: %s\n", - ch, font_charset, strerror(errno)); - } else { - vga_to_curses[ch].chars[0] = wch; + if (iconv(conv, &pfch, &sfch, &pmbch, &smbch) == (size_t) -1) { + fprintf(stderr, "Could not convert font glyph 0x%02x " + "from %s to a multibyte character: %s\n", + fch, font_charset, strerror(errno)); + return; } + + memset(&ps, 0, sizeof(ps)); + if (mbrtowc(&wch, mbch, sizeof(mbch) - smbch, &ps) == -1) { + fprintf(stderr, "Could not convert font glyph 0x%02x " + "from a multibyte character to wchar_t: %s\n", + fch, strerror(errno)); + return; + } + vga_to_curses[fch].chars[0] = wch; } /* Convert one wchar to UCS-2 */ static uint16_t get_ucs(wchar_t wch, iconv_t conv) { - uint16_t ch; - char *pch, *pwch; - size_t sch, swch; + char mbch[MB_LEN_MAX]; + uint16_t uch; + char *pmbch, *puch; + size_t smbch, such; + mbstate_t ps; + int ret; - pch = (char *) &ch; - pwch = (char *) &wch; - sch = sizeof(ch); - swch = sizeof(wch); - - if (iconv(conv, &pwch, &swch, &pch, &sch) == (size_t) -1) { - fprintf(stderr, "Could not convert 0x%02lx from WCHAR_T to UCS-2: %s\n", - (unsigned long)wch, strerror(errno)); + memset(&ps, 0, sizeof(ps)); + ret = wcrtomb(mbch, wch, &ps); + if (ret == -1) { + fprintf(stderr, "Could not convert 0x%04x " + "from wchar_t to a multibyte character: %s\n", + wch, strerror(errno)); return 0xFFFD; } - return ch; + pmbch = (char *) mbch; + puch = (char *) &uch; + smbch = ret; + such = sizeof(uch); + + if (iconv(conv, &pmbch, &smbch, &puch, &such) == (size_t) -1) { + fprintf(stderr, "Could not convert 0x%04x " + "from a multibyte character to UCS-2 : %s\n", + wch, strerror(errno)); + return 0xFFFD; + } + + return uch; } /* @@ -466,6 +509,11 @@ static uint16_t get_ucs(wchar_t wch, iconv_t conv) */ static void font_setup(void) { + iconv_t ucs2_to_nativecharset; + iconv_t nativecharset_to_ucs2; + iconv_t font_conv; + int i; + /* * Control characters are normally non-printable, but VGA does have * well-known glyphs for them. @@ -505,30 +553,25 @@ static void font_setup(void) 0x25bc }; - iconv_t ucs_to_wchar_conv; - iconv_t wchar_to_ucs_conv; - iconv_t font_conv; - int i; - - ucs_to_wchar_conv = iconv_open("WCHAR_T", "UCS-2"); - if (ucs_to_wchar_conv == (iconv_t) -1) { + ucs2_to_nativecharset = iconv_open(nl_langinfo(CODESET), "UCS-2"); + if (ucs2_to_nativecharset == (iconv_t) -1) { fprintf(stderr, "Could not convert font glyphs from UCS-2: '%s'\n", strerror(errno)); exit(1); } - wchar_to_ucs_conv = iconv_open("UCS-2", "WCHAR_T"); - if (wchar_to_ucs_conv == (iconv_t) -1) { - iconv_close(ucs_to_wchar_conv); + nativecharset_to_ucs2 = iconv_open("UCS-2", nl_langinfo(CODESET)); + if (nativecharset_to_ucs2 == (iconv_t) -1) { + iconv_close(ucs2_to_nativecharset); fprintf(stderr, "Could not convert font glyphs to UCS-2: '%s'\n", strerror(errno)); exit(1); } - font_conv = iconv_open("WCHAR_T", font_charset); + font_conv = iconv_open(nl_langinfo(CODESET), font_charset); if (font_conv == (iconv_t) -1) { - iconv_close(ucs_to_wchar_conv); - iconv_close(wchar_to_ucs_conv); + iconv_close(ucs2_to_nativecharset); + iconv_close(nativecharset_to_ucs2); fprintf(stderr, "Could not convert font glyphs from %s: '%s'\n", font_charset, strerror(errno)); exit(1); @@ -536,7 +579,7 @@ static void font_setup(void) /* Control characters */ for (i = 0; i <= 0x1F; i++) { - convert_ucs(i, control_characters[i], ucs_to_wchar_conv); + convert_ucs(i, control_characters[i], ucs2_to_nativecharset); } for (i = 0x20; i <= 0xFF; i++) { @@ -544,12 +587,12 @@ static void font_setup(void) } /* DEL */ - convert_ucs(0x7F, 0x2302, ucs_to_wchar_conv); + convert_ucs(0x7F, 0x2302, ucs2_to_nativecharset); if (strcmp(nl_langinfo(CODESET), "UTF-8")) { /* Non-Unicode capable, use termcap equivalents for those available */ for (i = 0; i <= 0xFF; i++) { - switch (get_ucs(vga_to_curses[i].chars[0], wchar_to_ucs_conv)) { + switch (get_ucs(vga_to_curses[i].chars[0], nativecharset_to_ucs2)) { case 0x00a3: vga_to_curses[i] = *WACS_STERLING; break; @@ -649,8 +692,8 @@ static void font_setup(void) } } } - iconv_close(ucs_to_wchar_conv); - iconv_close(wchar_to_ucs_conv); + iconv_close(ucs2_to_nativecharset); + iconv_close(nativecharset_to_ucs2); iconv_close(font_conv); } From 962cf8fd4faefb2d5f425abc5c988ea7ba2bbce9 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Sat, 27 Apr 2019 20:33:07 +0200 Subject: [PATCH 2/4] ui/curses: manipulate cchar_t with standard curses functions The chars/attr fields are curses internals, setcchar and getcchar have to be used instead. Signed-off-by: Samuel Thibault Tested-by: Kamil Rytarowski Message-Id: <20190427183307.12796-3-samuel.thibault@ens-lyon.org> Signed-off-by: Gerd Hoffmann --- ui/curses.c | 43 +++++++++++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 14 deletions(-) diff --git a/ui/curses.c b/ui/curses.c index 81d419879e..1f3fcabb00 100644 --- a/ui/curses.c +++ b/ui/curses.c @@ -66,20 +66,22 @@ static void curses_update(DisplayChangeListener *dcl, { console_ch_t *line; cchar_t curses_line[width]; + wchar_t wch[CCHARW_MAX]; + attr_t attrs; + short colors; + int ret; line = screen + y * width; for (h += y; y < h; y ++, line += width) { for (x = 0; x < width; x++) { chtype ch = line[x] & 0xff; chtype at = line[x] & ~0xff; - if (vga_to_curses[ch].chars[0]) { - curses_line[x] = vga_to_curses[ch]; - } else { - curses_line[x] = (cchar_t) { - .chars[0] = ch, - }; + ret = getcchar(&vga_to_curses[ch], wch, &attrs, &colors, NULL); + if (ret == ERR || wch[0] == 0) { + wch[0] = ch; + wch[1] = 0; } - curses_line[x].attr |= at; + setcchar(&curses_line[x], wch, at, 0, NULL); } mvwadd_wchnstr(screenpad, y, 0, curses_line, width); } @@ -412,7 +414,7 @@ static void curses_atexit(void) static void convert_ucs(unsigned char fch, uint16_t uch, iconv_t conv) { char mbch[MB_LEN_MAX]; - wchar_t wch; + wchar_t wch[2]; char *puch, *pmbch; size_t such, smbch; mbstate_t ps; @@ -430,20 +432,22 @@ static void convert_ucs(unsigned char fch, uint16_t uch, iconv_t conv) } memset(&ps, 0, sizeof(ps)); - if (mbrtowc(&wch, mbch, sizeof(mbch) - smbch, &ps) == -1) { + if (mbrtowc(&wch[0], mbch, sizeof(mbch) - smbch, &ps) == -1) { fprintf(stderr, "Could not convert 0x%04x " "from a multibyte character to wchar_t: %s\n", uch, strerror(errno)); return; } - vga_to_curses[fch].chars[0] = wch; + + wch[1] = 0; + setcchar(&vga_to_curses[fch], wch, 0, 0, NULL); } /* Setup wchar glyph for one font character */ static void convert_font(unsigned char fch, iconv_t conv) { char mbch[MB_LEN_MAX]; - wchar_t wch; + wchar_t wch[2]; char *pfch, *pmbch; size_t sfch, smbch; mbstate_t ps; @@ -461,13 +465,15 @@ static void convert_font(unsigned char fch, iconv_t conv) } memset(&ps, 0, sizeof(ps)); - if (mbrtowc(&wch, mbch, sizeof(mbch) - smbch, &ps) == -1) { + if (mbrtowc(&wch[0], mbch, sizeof(mbch) - smbch, &ps) == -1) { fprintf(stderr, "Could not convert font glyph 0x%02x " "from a multibyte character to wchar_t: %s\n", fch, strerror(errno)); return; } - vga_to_curses[fch].chars[0] = wch; + + wch[1] = 0; + setcchar(&vga_to_curses[fch], wch, 0, 0, NULL); } /* Convert one wchar to UCS-2 */ @@ -592,7 +598,16 @@ static void font_setup(void) if (strcmp(nl_langinfo(CODESET), "UTF-8")) { /* Non-Unicode capable, use termcap equivalents for those available */ for (i = 0; i <= 0xFF; i++) { - switch (get_ucs(vga_to_curses[i].chars[0], nativecharset_to_ucs2)) { + wchar_t wch[CCHARW_MAX]; + attr_t attr; + short color; + int ret; + + ret = getcchar(&vga_to_curses[i], wch, &attr, &color, NULL); + if (ret == ERR) + continue; + + switch (get_ucs(wch[0], nativecharset_to_ucs2)) { case 0x00a3: vga_to_curses[i] = *WACS_STERLING; break; From bfafa473ede36f95a71c46271cff07fde1854f2a Mon Sep 17 00:00:00 2001 From: HOU Qiming Date: Tue, 7 May 2019 11:05:01 +0300 Subject: [PATCH 3/4] ui/console: Precautionary glBindTexture and surface->texture validation in surface_gl_update_texture In a GVT-g setup with dmabuf and GTK GUI, the current 2D texture at surface_gl_update_texture is not necessarily surface->texture. Adding a glBindTexture fixes related crashes and artifacts, and is generally more secure. Signed-off-by: HOU Qiming Tested-by: Marcel Apfelbaum Signed-off-by: Marcel Apfelbaum Message-id: 20190507080501.26712-1-marcel.apfelbaum@gmail.com [fixed malformed patch, rebase to master] Signed-off-by: Marcel Apfelbaum Signed-off-by: Gerd Hoffmann --- ui/console-gl.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/ui/console-gl.c b/ui/console-gl.c index a56e1cd8eb..c1cb3bd673 100644 --- a/ui/console-gl.c +++ b/ui/console-gl.c @@ -92,13 +92,17 @@ void surface_gl_update_texture(QemuGLShader *gls, assert(gls); - glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, - surface_stride(surface) / surface_bytes_per_pixel(surface)); - glTexSubImage2D(GL_TEXTURE_2D, 0, - x, y, w, h, - surface->glformat, surface->gltype, - data + surface_stride(surface) * y - + surface_bytes_per_pixel(surface) * x); + if (surface->texture) { + glBindTexture(GL_TEXTURE_2D, surface->texture); + glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, + surface_stride(surface) + / surface_bytes_per_pixel(surface)); + glTexSubImage2D(GL_TEXTURE_2D, 0, + x, y, w, h, + surface->glformat, surface->gltype, + data + surface_stride(surface) * y + + surface_bytes_per_pixel(surface) * x); + } } void surface_gl_render_texture(QemuGLShader *gls, From 5fff13f245cddd3bc260dfe6ebe1b1f05b72116f Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Tue, 14 May 2019 06:24:43 +0200 Subject: [PATCH 4/4] kbd-state: fix autorepeat handling When allowing multiple down-events in a row (key autorepeat) we can't use change_bit() any more to update the state, because autorepeat events don't change the key state. We have to explicitly use set_bit() and clear_bit() instead. Cc: qemu-stable@nongnu.org Fixes: 35921860156e kbd-state: don't block auto-repeat events Buglink: https://bugs.launchpad.net/qemu/+bug/1828272 Signed-off-by: Gerd Hoffmann Message-id: 20190514042443.10735-1-kraxel@redhat.com --- ui/kbd-state.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/ui/kbd-state.c b/ui/kbd-state.c index f3ab2d7a66..1668d17dda 100644 --- a/ui/kbd-state.c +++ b/ui/kbd-state.c @@ -59,7 +59,11 @@ void qkbd_state_key_event(QKbdState *kbd, QKeyCode qcode, bool down) } /* update key and modifier state */ - change_bit(qcode, kbd->keys); + if (down) { + set_bit(qcode, kbd->keys); + } else { + clear_bit(qcode, kbd->keys); + } switch (qcode) { case Q_KEY_CODE_SHIFT: case Q_KEY_CODE_SHIFT_R: