-rw-r--r-- | src/eyetil.cc | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/eyetil.cc b/src/eyetil.cc index cd22eea..6ccc4ae 100644 --- a/src/eyetil.cc +++ b/src/eyetil.cc | |||
@@ -86,12 +86,40 @@ binary_t md5_digester::final() { | |||
86 | uint16_t block512_t::tcpcksum(block512_t& data) { | 86 | uint16_t block512_t::tcpcksum(block512_t& data) { |
87 | uint32_t sum = std::accumulate(data.data,data.data+words,0); | 87 | uint32_t sum = std::accumulate(data.data,data.data+words,0); |
88 | while(uint32_t hw = sum>>16) sum = (sum&0xffff)+hw; | 88 | while(uint32_t hw = sum>>16) sum = (sum&0xffff)+hw; |
89 | return 0xffff&~sum; | 89 | return 0xffff&~sum; |
90 | } | 90 | } |
91 | 91 | ||
92 | void integrity_digester::update(const void *d_,size_t s) { | ||
93 | uint8_t *d=(uint8_t*)d_; | ||
94 | if(data_size) { | ||
95 | int l = sizeof(data)-data_size; | ||
96 | if(l>s) { | ||
97 | memmove(data.dptr(data_size),d,s); data_size+=s; return; | ||
98 | } | ||
99 | memmove(data.dptr(data_size),d,l); d+=l; s-=l; | ||
100 | md5.update<uint16_t>( data.tcpcksum(data) ); | ||
101 | } | ||
102 | if(s<sizeof(data)) { | ||
103 | memmove(data.dptr(0),d,s); data_size=s; return; | ||
104 | } | ||
105 | size_t bb=s/sizeof(block512_t); | ||
106 | std::transform((block512_t*)d,((block512_t*)d)+bb, | ||
107 | md5.updater<uint16_t>(),block512_t::tcpcksum); | ||
108 | size_t ss=bb*sizeof(block512_t); | ||
109 | d+=ss; s-=ss; | ||
110 | assert(s<sizeof(block512_t)); | ||
111 | if(s) memmove(data.dptr(0),d,data_size=s); | ||
112 | } | ||
113 | |||
114 | binary_t integrity_digester::final(const std::string& ukey) { | ||
115 | assert(!data_size); | ||
116 | md5.update( binary_t(ukey) ); | ||
117 | return md5.final(); | ||
118 | } | ||
119 | |||
92 | static void make_path_for_template(const std::string& p,mode_t m) { | 120 | static void make_path_for_template(const std::string& p,mode_t m) { |
93 | struct stat st; | 121 | struct stat st; |
94 | std::string pp; | 122 | std::string pp; |
95 | for(std::string::size_type sl=p.find('/',1); | 123 | for(std::string::size_type sl=p.find('/',1); |
96 | sl!=std::string::npos; | 124 | sl!=std::string::npos; |
97 | sl=p.find('/',sl+1)) { | 125 | sl=p.find('/',sl+1)) { |